Custom Waluigi & Wario, WIP.

[Flyingmonkeh]

Hello there, I'm new to these forums. And I thought it would benefit me if I could get some helpful criticism for these two sprites.

Now as you can see it's a custom Waluigi & Wario.
As you can also see, they are not finished.

Before I go any further, could you tell me how to improve them?
All your experience would be appreciated.

Thank you all in advance.