I don't do a lot of stippling these days so I really had to HUNT for this!! LOL* This is what I "like" my stippling to look like, but I'll be truthful, this one was just one of those days that everything meshed and it turned out consistent. That doesn't always happen.
Quilting is as unique as handwriting. Don't stress over it!!! Also realize that everything gets better with practice!
Good luck!