Maverick

I'm new to the FG knot. Been trying to learn it and having trouble. 15# Sufix832 to 8 or 10 lb Segar fluoro leader. I've tried the hand method of forming triangle but can't keep braid right enough and get flouro to wrap. I've had better success wrapping braid around reel handle to hold line tight. Problem is that the braid doesn't seem to want to wrap correctly. Watched alott of videos and I'm doing it right but can't get it to form the wrap correctly all the time. Any suggestions?