First: Use your main account just for pk and collecting items.
Second: If youre one of those players that obsesses over stats, make sure you create a "how to be a pro account" and spar non-stop until youre super pro like Comet and Kevin91. You will only use this account for spar because when you become a pro sparer you will get rid of it(you dont want a "crappy" ratio on your resume) so you dont want to waste your time collecting hats, items and whatnot.
Third: After you become a pro sparer you can start sparring with your main account which by then should be a pro pkr account. Make sure you selectively spar noobs to inflate your ratio and spar other pros once in a while so you can show off your newly acquired spar skills.
This plan is fail proof. Just be cautious because there are people that use certain methods to find out which accounts are linked together which would expose your lil secret.
If these tips dont make you better I will rep you until i get you a lime green rep bar
