monster fanart crit maybe?

So I am going to have to start drawing allot of monsters in one of my comics pretty soon and I haven't really done that lately so I tried it out with some characters from MVC2 - this is my current team. I'd like any pointers at all on drawing monsters, and anything at all that you think I'm doing wrong.

http://www.anydayhappyday.com/badlove.jpg

Monsters are easy considering there are none to compare to. You can do anything you want and it will be considered great because there is no reference for it unless you use a successful character like the alien in the art of HRR GIGER.
Just make sure the basics are right like proportions if it takes on any kind of a human nature. And add some nice effective coloring and bang-o you got a masterpiece!