do a bad job

To perform a task poorly. I sure did a bad job of parking the car—I doubt I could get any further away from the curb. Please paint carefully. If you do a bad job, you'll be stuck with it. The tent blew over? Aw man, I guess I did a bad job of setting it up.

do a good, bad, etc. ˈjob (on something)

make a good, bad, etc. job of something

do something well, badly, etc: They did a very professional job. ♢ You’ve certainly made an excellent job of the kitchen (= for example, painting it).