Front camera fastening piece

I had to take the front camera fastening bracket off to get to the front camera and replace it, I got it and got 10 fastening pieces and broke 3 already trying to get it back onto the little bracket holes on the phone, I tried using tweezers as ifixit recommends in the manual and broke them, I don't want to waste anymore and want to know how to put them on right? There are 3 clips that need pushed into the bracket and maybe I start in a certain order of the clips? I have tried with no success and have done many many iPhone 4 repairs but this I just cannot get without details. Maybe a video demonstration?

It is in step 20 & 21 in "installing IPhone 4 front camera" guide. Is for iPhone 4 16GB ATT GSM.

Any help would be awesome.