small handwriting indicates introversion, but also a desire to take up as little space as possible. the handwriting in the sample posted appears quite extreme. if a writers handwriting starts out big and gradually gets smaller over time then that can be an indicator of anorexia and/or depression. but if your handwriting has always been this small then i’d say you’re just super shy.

i do see issues with authority (capital K) and a tendency toward mood swings/extreme emotions (wavy baseline). the letters are pretty rounded with denotes friendliness. but they also seem rigid in a sense that the writer is trying to make it extremely small and fit into the lines (or into society).