Even though I was quite happy with the current development of my model, I was sure that there still is a room for improvement. In order to get some feedback, I’ve set up a profile on a forum called C4D Cafe. I have posted my model and asked for people’s opinions on what could be corrected. Two very experienced users replied almost immediately offering valuable advice on what could be improved:

Most important points of the feedback that I will use as a guide in further development:

– eliminate all triangles – Subdivision Surface doesn’t tolerate them

– rearrange the polygons around the next, they should be turned into tidy strips of 4 sided polys

– extend the polygon density

– fix the ngons around the mouth and upper chin

– more clean loops around the mouth

I found those replies very helpful and I’m pleased with the fact that both users agreed that my work is going in the right direction. However, the next step will be improving the topology. My model is not intended for animating, but it’d be a good idea to adjust it correctly, just in case I decide to create a simple animation.