As for suggestions, if you can get an angle in which you're viewing the side characters from a more elevated position, you might be able to make it look less like the characters are falling backwards, however I actually didn't think that until I read the post... it wasn't until it was mentioned that I noticed it could look like that, so I guess it just depends.
Also would suggest that you give either a glow, or an outline to the font you have so that it stands out more. You could also go with a "white" colored font as this often stands out the best in any colour.
Other than that, really like the backround and you have some nice effects. Good job