A couple good drills here that I remember off the top of my head:
Snap shooting
Laning
You can apply the laning drill to running and gunning too ie. to corner etc.
With a new team, you'll really want to focus on the basic core skills in drills at the start, then maybe into some situational ones ie. 2v2 dominance drills etc.
Best bet is to watch "One with a gun" with Max Lundqvist or "Dynasty dissected" on Youtube or find yourself a hard copy. A quick youtube will find lots of drill ideas but try to stick to some of the company endorsed or pro player ones as every bloke and his dog seems to be posting their drills and some can be a bit iffy.
This isn't really a drill but good ...
Snake play tips