Surprising My Man

Okay ladies, it's been almost three weeks since I've been able to see my guy and we have both been pretty impatient. We finally get to see each other Friday and I want to surprise him with something new. I was wondering if you had any blowjob tips or tips for me being on top that will drive him crazy. I want to take charge and be more dominating so any advice on how to do that would I would greatly appreciate!