I know what you mean, after spending too much time looking at the same drawing, then it will become weird and it feels wrong and bad. That's why these days I don't dwell on things too long because otherwise I would just dump them in unfinished pile of stuff.
But this face is good and quite appealing already even in its simplicity. I wonder if you're going to continue working on it or will you leave it as is :).
-upvoted-
Me yesterday. I went to work on coloring a skin tone for this and sculpting out the face. Eventually I was ready to take a break because it seemed like I was getting nowhere!
I’m always tempted to leave these sketches as is but I will keep working on it! I want to do different hair and makeup designs with this face. ^^