@mahlua Yeah thats close to what I was getting at. it would be great to see a bit more shade, and shade variety, like strong blacks and greys. I too have had a really tiny tablet but have since moved on twice :P some light studies would be good.
@walter taking that into account as well, maybe you are not zooming in enough for the details, and treating the canvas as a traditional piece of paper in that you dont zoom in for the details, especially if you have a smaller tablet. I do this too but my tablet is larger so I can get away with it lol. the trouble is, that for faces you are probably only using a small area of your tablet, like 1cm square or less, rather than using the whole lot, which will give you more control.
while zoomed out characters do have less detail (such as losing details on the face/hair etc), its still best to draw them as accurately as you can, but leaving out the details that you dont want.
I personally use an A3 canvas (4000px x 3000px roughly I think), but A4 is plenty to be honest.