Buzzing Pwoblemssss

I have big lips first of all, and my upper lip is further out than my lower lip (And it really pisses living with it.). I think it negatively affects buzzing, ESPECIALLY with higher notes. Any ideas on how to help this? It seems that when I try to buzz inwars, my lips either just come outwards, or my upper lip takes over my lower, being wider, larger, and again, further out.