Try to find the biggest arse horde being low, unaware, vulching your field. Then come in low and lightening fast, kill 5-8-10 of them then escape before they send the counter jets. Shoot only at close ranges, lead a lot, dont spray much, dont try to attack B17s, especially over 20k, dont turnfight unless youre empty and all alone against a 190, and the most important of all, avoid the head on, what ever it takes.
Good luck.