What I mean is, that particular girl doesn't exactly fit the standard idea of an atractive (steriotypical more precisely) figure. Whilst modeling realistic people is a good thing, it generaly isn't a good place to start when it comes to learning topology and mesh flow. You generaly end up with more comments on the large…
I doubt that knee will hold up. The other joints are questionable but definitely with some work would deform much better. Games work in tris, there's nothing wrong with your final game ready model having tris. This all quad workflow should only be for sculpting and your own sanity durring modeling. When it comes to rigging…
well, no , it looks like a babies face, or a fat mans face. But thats because you havent put in any definition yet thats all. Just keep looking at peoples faces to notice the important curves.
I am by no means a character artist, but I have had experience making a few characters and having to rig n skin them.....and what I found is that generally a few tris here and there are OK, as long you dont have them in areas where you'll have deformation such as joints or areas on the front of the face. If you must have…