Third times a charm?
Sorry, third time isn't a charm.

Scanlines aretoo visible, horrible text, horrible BG, little to no brushwork, no effects. I'm sorry, you may be a beginner, but you need to read some tutorials, and combine them into one.

Keep with GFX, you'll get better, read a few tutorials, make 2-3 sigs from that tut, read a few more tutorials, add the effects from those to your old sigs, they will improve greatly.

Do NOT give up.