How do these parts come off???

Yeah I've removed the fuel door screws with needle nose pliers too. Once in a while I need to turn one from the inside end to get it moving.
As for those clips on the reveal moldings... its a hit and miss. On one car I seem to get the right angle on the dangle and zip the tool along releaing the clips like snaps , then on the next car I fight and / or break most of them. Good luck