It looks like it was his first time doing this! Where did you find him, back of a matchbook?
Take it to a reputable shop and ask for references/pics of previous cars they've done.
Over time clear bras look really bad on white and black paint. White probably more so than any other color.
I was told that you don't really need the clear bra on bumpers since they're made out of plastic & don't rust. It's more so for surfaces where a deep scratch could penetrate the clear coat & paint and cause rust over time if not treated.