It appears that your graphic is just a bit off. Try going into something like paint (or whatever you use) and moving the HP bar around until you get it where you need it.
Don't forget to get rid of the Lv you put in, as the game already includes that. Of course, that method will only sync everything, and won't necessarily make it look good. If you can edit the script to lower the placement of the HP bar itself that would probably be much better, but I'm not sure how to do that yet myself!