>>1606812sup, it's me, the nitpicker. the overall vector is beautiful, and definitely really good, especially for a beginner, but here are some details that you should fix, in my humble opinion.
1: You erased the two lines that cross the ahoge too soon, they don't touch it, and will make it impossible to use anything like a bucket tool on this area later on.
2: The left line is wobbly.
3: The lines touch awkwardly, but since i haven't seen the source image, it might be intentional.
4: The one line crosses the strand of hair, and there is a small messed up line next to it.
5: Again, you must be more careful when erasing crossing lines, you erased the hair sticking out there too, and the cross is overall untidy.
6: Stray line.
7: Collar line crosses the strand of hair.
8: The collar and collar folds should be aligned more parallel looking. Didn't see the source image so it could be intentional.
Hope this helped you, and keep working hard!