Even though many other people have submitted custom arm cannons to the Metroid section, I have never seen these in the area...
The Beams are from the 1st, 2nd, and 3rd Metroid Primes
(and I added a custom made one for kicks)
I've seen better Arm Cannons on the net. No offense, but your sheet needs a lot of work. You should post a thread in Sprite Discussion so you can get feedback on improving your sprites. Then you can come back here to make a formal submission.
Oh and by the way. Credit tags bigger than sprite sheets are frowned upon.
Thanks for saying that, honestly. I need real criticism from other people like your self to better my abilities.
As for the credit sheet, I was thinking about that after I posted.