Original image
step 1 of 10
A refined sketch
step 2 of 10
Start colouring, used render clouds to make some texture in the chameleon
step 3 of 10
Painted shadows with a rounded soft brush
step 4 of 10
Add the wall texture to the chameleon skin in overlay mode, used the liquify tool to make it fit to the body.
step 5 of 10
Improved shadows and details
step 6 of 10
Added a drop shadow, here is a bit transformed to make the shadows fin on the scene
step 7 of 10
Here is with the background
step 8 of 10
Finally I get rid of the color and added the sofa texture to the chameleon skin
step 9 of 10
Desaturate and put in multiply mode this layer, also used the liquify tool as in the wall texture
step 10 of 10
Here is with the texture applied to the body, change the brightness/contrast of the chameleon to make it with the same grey tones of the wall
Final result
