Continuous line drawing and blind contour drawing

For these continuous line drawings, I definitely could improve them by not using as much detail. For this task less is definitely more and if I just did the outlines of the faces I definitely think I could improve it massively.

For these blind contour drawings, I definitely think these have a lot more life and are more fun to look at than the ones I was looking at while drawing. I like the use of colours for the some of these portraits too and it makes the features of the face stand out a lot.