I've found that just more time on the bike will help with the wobblies. Also, it's a matter of speed too. I find I get really wobbly when going slower. When I first started out 8mph felt like I was absolutely flying and scared as all get out...which reminds me... Make sure your not gripping the bike with a death grip. Try and be loose and relaxed on the bike.

Good luck and welcome to TE!!