Good I like the clean lines, something I struggle with as of current. Remember to put his hand on the right arm. I like to think of it like this:

His index finger should always be on the side TOWARDS his face, so as his thumb.
Also remember Sonic's Shoe buckle, which is always on side outwards!

Just some simple advice. Remember; Keep Drawing!

This is GREAT! I would love to know what programs you use to draw and animate on. Don't wanna nit pick to much but Min-Min is Chinese, not Japanese, so her saying "Itadakimasu" feels and looks as out of place as Sonic saying his favorite food is Chicken, instead of Chili Dogs ya know? Also since Min-Min's entire "thing" is that she's in a family that owns a Noodle shop that is passionate in their craft her eating cup noodles can seem out of place. I'm not at all a ARMS lore Guru but I do know that about her. Min-Min also can't speak English.

As also an aspiring NSFW artist, I would love it if you Shared some practice, perspective, coloring, and especially inking, tips for ya boi!