I haven’t done one of these in a while, and it’s not what I envisioned, but at least it’s there — I never seem to match the image in my head.
Later… okay, I didn’t redraw it, but I did tweak colors and layers a bit. Still not happy, but no longer cringing.
macbebekin.wordpress.com 
I think it happens to almost everyone…You had your great image in your head, and then you do just what you can…The nice part of it, is that people can’t see your thoughs, so don’t worry! :-))))
I really like your image!
Shoes are your specialty, huh? cool.
Nicely done and really interesting idea.
I don’t think many of us are able to reporduce the idea exactly