Handwriting is telling of the personality of the writer. Neat handwriting denotes a neat writer. Untidy handwriting usually means the writer is untidy in their life.
If you dream of seeing neat handwriting and in real life your handwriting is neat, this dream imagery has no surprise meaning for you.
However, if your handwriting in real life is untidy but you see tidy handwriting in your dream, it tells you to improve your handwriting skills.