GameBoy inspired Aseprite Banner

I’m new to Aseprite as well as pixel art. This is my first creation while getting to know the program. So far I can say that I’m more than happy with this program an appreciate the creators quick response via email.

Couple questions for seasoned pixel artists…

  • What should I focus on in the beginning?

  • From what you see below is there any advice you could give me? I know its basic and the character is obviously not my own creation.

I used this for my profile header…(Will add to it later)