In this tutorial, we will do a unique work on reincarnation using simple Photoshop tools and tricks: Brush, Eraser, zoom in and out, and the Plastic filter.
Two images were used in the lesson: the background on which we will insert an object (sandwich) and the mouth of a toothy fish. Remember that the right image is the most important step to get a good result.
It is also important that the resolution (quality) of the images is not very different, otherwise it will be noticeable with the increase.
Step 1.
At this stage we will need to prepare a place under the mouth on our sandwich.
Open the sandwich image. Duplicate the layer (Ctrl + J).
Go to menu Filter – Plastic (Shift + Ctrl + X) and the Bloat tool with a brush diameter of 64 px, start from the middle to the side to draw a shape close to the shape of the fish’s mouth.
Step 2.
Go to the image with the fish. Select the fish jaw in a convenient way for you (the lasso tool is better suited), and with the help of the tool move “V” drag it over the image with the sandwich. Using a free transformation (Ctrl + T), reduce the size of the jaw (holding down the Shift key) and place it in the previously prepared place. Apply Transformation (Enter)
Erase with an eraser too much, if you inaccurately cut something.
Step 3.
Jaw size horizontally suitable, but large vertically. Call Free Transform (Ctrl + T), slightly raise up the lower edge of the transformation frame, thereby narrowing the jaw a little.
Step 4.
Using the Finger tool 
(Smudge tool) change a bit the shape of the jaw. Along the edges, starting just below the middle, move the brush (Finger) up to the center. This will pull the shape a bit.
Step 5.
Reduce the opacity of the “Jaws” layer to around 50% so that the layer with the sandwich can be seen. Eraser with 100% hardness wipe the jaw in the place where it closes a piece of oil to bring it to the fore. And rub a little on top so that the crust at the sandwich was even.
Restore 100% opacity to layer.
Using Color tone \ Saturation (Hue / Saturation) brighten a little, increasing the brightness and with Color balance (Color Balance) achieve the closest color to the color of the sandwich.
In different photos, the settings will naturally be different, I can say that in this example the author slightly increased the saturation and brightness in the Color tone \ Saturation (Ctrl + U), and in the Color balance (Ctrl + B) added yellow, a little red and removed green, in all three tone balances (shadow, midtones and light). You can also experiment with Curves (Ctrl + M)
Step 6.
Create a new layer with 100% opacity. Take a brush with a large diameter and 0% stiffness, reduce the opacity of the brush to about 50%. Now we need to take the color with which we will draw the shadow from the sandwich crust on the jaw, hold down the Alt key and with the pipette that appears, click on the dark color at the top of the sandwich, on the crust itself. (release Alt).
Draw on the upper edge of the sandwich and jaw, so that you get a transition from light (teeth) to dark (the edge of the sandwich). Do not worry if you have painted the edge of the sandwich badly. Take the eraser, the opacity is 100%, the rigidity is 100% and having approached the image, carefully erase the excess.
The author considers this method much easier and faster than using a mask in order to remove unnecessary. But in order for this method to work, you must draw on a new layer, so that only what you have painted, not the entire image, is erased.
In the same way, while on the new layer, make the transition from the sandwich to the corners of the jaw. (you can use the Stamp tool, you only need to have – All layers in the sample, well, adjust the stiffness and opacity of the brush)
Step 7.
After applying the Plastic filter, the edges of our sandwich became distorted. To fix this, hide all layers (removing the eye) except the first (unchanged).
Using the rectangle tool 
(M) select the pieces you want, first on one side of the sandwich, then hold down the Shift key on the other side. Press Ctrl + C (copy) and Ctrl + V (paste). Place the resulting layer above all layers. Return visibility to layers. Erase with a low stiffness erase too much, leaving only the smooth edges of the sandwich.
Step 8.
Fruits, too, were distorted and took an unnatural shape. The author wanted to achieve the effect as if they had slipped when the mouth was opened. To do this, again hide the layers, except the first one and select the berries separately. First, the left berry, Ctrl + C (copy) and Ctrl + V (paste), and then, going back to the first layer, the right Ctrl + C (copy) and Ctrl + V (paste). Place these two layers above all layers. Return visibility to layers. Now using the transformation (Ctrl + T), change the angle of the berries, so that they seem to roll, apply the transformation and erase the excess. (reduce the opacity of the berries to make it easier to wash, the main thing is to leave the reflection from the berries.)
Step 9.
There were too many berries on the right. Create a new layer and with a brush with low rigidity draw extra berries with the background color (hold down the Alt key to select the desired color). When done, lower the opacity of this layer so that the edges of the sandwich and the rolling berries can be seen, and use the Eraser with 100% hardness to erase the excess (on the sandwich and berries). You can also use a stamp. 
(sample – All layers.)
On the same layer, the author painted on the folds and the shadow on the left of the sandwich to make the transition to the jaw more natural. To do this, he took the desired color with a pipette and first with a large brush with 0% stiffness and 20% opacity, he drew a shadow, swiping the same places several times to make certain transitions, and then reduced the brush and painted the details.
Step 10.
Well, it’s almost over. There is not enough of a very small detail, the flowing jam on the teeth.
To do this, take a brush, set the diameter depending on the size of the drop, determine the color from the jam on the sandwich, the hardness of the brush is 100%, the opacity is about 30%, in order to preserve the transparency of the drop.
On a new layer, draw a drop shape, preferably without releasing the mouse, or you get an uneven color overlay. Then walk again on it, if the color is very transparent. Then take the color from the dark areas on the sandwich, draw a shadow on the drop. And white paint glare.
Create a new layer and draw in black paint (low brush opacity) drop shadow. Then you change the layers (drop and shadow from it) in places so that the shadow as if hid under the drop. Excess can be erased with Eraser, if necessary.
Well that’s all.
Good luck in doing this lesson.
Author: worth1000
