I'm new in the 3D world and this is my first portfolio character. I would like to know if there are any errors or where I missed something or maybe something should be added? Just some feedback.
And the big question about topology. Some artists use a lot of triangles and poles. As I understand, triangles can be used, but how often and in what situations? Or does it make sense to stick to a perfect square grid? Does this affect, for example, optimization in games or not? Or maybe while you are doing work for the portfolio, you can not pay attention to the grid at all, the main thing is that it should be beautiful. But how then to increase the skill of retopology, because i think it is important or really not so important? And why are some artists using a rather unusual topology in their models? For example: (https://i.imgur.com/XaKqP2Z.png) (https://i.imgur.com/ewTRt8s.png) (https://i.imgur.com/OB5LfeE.png).
Based on outfit of my character from SWTOR and Sev from Republic Commando.
Sculpted in Zbrush, retopo'd, UV'd, rig in Maya, baked and textured entirely in Substance Painter and rendered in Marmoset Toolbag.
Thanks for your time and I'm sorry if I made a mistakes somewhere in the text (non-native English).