What does it mean for your personality if you are a right handed overwriter?
This means you are right handed, but you write like many lefties, holding the pen over the line, rather than under. It is very rare, and it is NOT just sloppy learning.
i don’t know if this is what you are looking for or not, since it sounds like this is more technique than your actual handwriting, but you might want to check out handwritingwizard.com for an analysis
Nick Cave and the Bad Seeds – Red Right Hand