Don’t include photos where you are holding something with disgusting, dirty, chewed-off fingernails. Photoshop that shit out.
Don’t put it in a weird box or dumb, tricky things. Don’t show anything with bad craft (glue all over it, mocked up poorly…etc.).
Don’t pretend fake work was real work. Just be real about it. Don’t make any excuses like “the budget was small, so that’s why XYZ was poorly produced”. Don’t show anything you are not totally excited about.