For something like this, use screenshots or promotional art as a reference for the characters so that they're not hideously off-model. Draw the rough shapes in pencil, then outline, erasing and re-drawing until it looks right. Then go over the final lines with a pen.
Well, thank you, sir, for your help, but I don't really think I need this; This drawing, as you may have noticed, is just a silly ten minut doodle I did on paint, thus, explaining the rough lines and the shaky effect on the characters. This is a joke, and I don't think it require any "artistic" attention. As you may have seen in my gallery, I'm not really the "fanart" kind, I prefer original characters, photography and 3D. And that kind of work is rare in my gallery, but I guess you saw this picture faved on someone's page? But, perhap, you might be more interrested in my school art? It been 3 years for now i'm at Supinfocom (( [link] ) which is a well-known computer graphics school (( 3d, modeling, rendering, animating ) Some of their students movies can be seen here [link] My personal channel is here [link] But I have a website with more things here [link]
thank you for your attention but your comment seem a bit off, if you're trying to troll me (( I don't mean critique = trolling, I just mean saying "learn to draw" as a simple comment seem like provocation ) it won't work with me.