Wolverine yells at Deadpool (Flash)

seeing how deadpool and wolverine has done I decided to animate a scene from it,

hope you like it!!

how did you make it so like perfectly round it doesnt look square like how it is when i normally draw?

I draw using the line tool, I get the basic shape, then I use the selection to to get the roundness of the forms, the i refine the shapes more with the subselection tools bezier curve to match the concept art