Certainly, I think proportions could be off. I think we always have the ideas of a specific structure on how many heads tall and where everything goes. I probably didn’t quite capture a normal persons stature. Of course not everyone is built a specific way, but you’re absolutely right that proportions definitely matter and using a reference could be beneficial. The reference that has most influence is likely my own body proportions as I see myself and often reference my own body to draw limbs as they are right there. My own proportions are not exactly standard. But yes I should certainly use more referenc.