Custom Mega Man Boss

[DuoDynamo]

Greetings, all.

I'm starting a Mega Man fangame (because no one has ever done that before) and I just created my first sprites for the game (which happen to be my first sprites ever). I'd really appreciate it if you guys could give me some feedback and suggestions.

Introductory animation:


Mugshot:


Here's artwork for reference.

As some of you might notice I borrowed the mugshot border from Mega Man 5. That's because I'm using Blyka's Mega Man engine for Game Maker, which uses Mega Man 5 as a base. I'll change that in the future.

Thanks in advance!