I agreee with @DokiDokiTsuna wholeheartedly, groups are going to be the end of me x'D doing a comic you can't run away from them tho, so I'm getting better at them (hopefully lmao).
The whole inferior half of the human body is hard for me as well to get right (I always draw legs too... Wide? (Dunno what's the correct word for this in English).
Also, placing the feet in the right way with the floor always gives me it's fair share of trouble (feet in general do).
This is all due to my lack of anatomy studies and for drawing mostly busts/mid bodys for most of my life x'D I'm in the process of fixing that.