Ekso, I'm with Cruel on this. Honestly, all your sketches either haven't changed much in look, or haven't got any better over the time you've been posting. If you went simple from the first time someone told you to do so on here, you'd be able to pull off the pieces that you're striving for much more efficiently.
Go real simple, no colors. You're putting too much effort into your color schemes and ideas in hopes it improves your letter structure, which it only hinders most of the time.