Oh yes, the old flying into the carpet never to return land. You have found it takes great care to keep these little buggers under total control. Glue with thin and thick super glue, just depends where and what. Careful too with placing the part, the super glue will suck it out of the tweezers and put it right where you Don't want it. I find it helps to have the part held in the tweezer, a drop of SG where you want it to go, and press it in place with the tip of the exacto or scalpel blade with the other hand.
Paint normally, spray primer does help.
Bill