your anatomy is just way off in general. Just for this one in particular: the arm behind the body is too short, making it look weird (the elbow should reach to around waist level). The held up arm seems twisted at an awkward angle. The face looks flat. The hands are stubby. The held up arm attaches to the torso too far down. Your vaginas always look wonky too (that's hard in general though, probably why a lot of artists use convenient censoring instead).
To me it seems like you are looking at references for the individual parts and your coloring is ok. But the more effort you put into that stuff the more apparent your lack of fundamentals become.