The Burger: I cut each of the pieces out using the Pen Tool and used the Hue/Saturation adjustment to add color to the different pieces of food. I also used the Warp Tool to transform them into the shapes I wanted. For the final look I added different filters and overlayed them.
step 2 of 5
The Fries: I cut the stick out with the Pen Tool to use for the french fries. Then I used the Hue/Saturation adjustment for the color and the Warp Tool to shape them they way I wanted. The final effect has added filters.
step 3 of 5
Homer: I cut out each part with the Pen Tool. For the mouth I cut the mushroom in half and copied it onto another layer and angled it to make it look like the mouth was open. The final effect has some burning and dodging and filters.
step 4 of 5
The Plate: Again I used the Pen Tool to cut out the rock. I duplicated it multiple times and used the Warp Tool to shape each piece into the plate. I used the Ellipse Tool and applied a layer mask to make the plate more round. For the final effect I used the Burn and Dodge Tools and also some different Layer Effects.
step 5 of 5
The Drool and also Ketchup (not shown): Both of these are just regular Brush Tools with the shown Layer Effects.
ALSO the background and table in the final image are the whole source image blurred with overlayed color.