Source 3 is an illustration, and not usable. 5.7. 3D Renders or Illustrations as Source:
Using other people's 3D renders or illustrations (even with permission and no matter in which form they are offered) creates a false impression of your artwork. So 3D renders or illustrations can not be used as sources, unless they are entirely created by yourself. Brushes and clipart can be used, but you need to mention them as a source too.

nice one ,it makes me smile gl author

bizarre!

Step 1, cut out lizard and top of wall (paste as new layer)
Step 2, select rectangle of background above lizard (paste as new layer)
Step 3, resize background selection to fit over lizard
Step 4, separate cut out lizard from top of wall (paste as new layer)
Step 5, adjust colour of cut out lizard to match background colour
Step 6, cut out lizard eye (paste as new layer)
Step 7, adjust all layers Opacity to blend with background
Step 8, add speech bubble.

Fan of the Fast Show right?