You seem kinda cool already. Maybe because you like to trade and stuff, but I guess the answer will forever elude me. :( Welcome to the PokéCommunity! :D
I'm sure you'll have a blast trading here (well, I do at least), and have a great time. :) I don't know what sort of tips you'd want from here, but if it helps, just ask me or something, and I could give you some tips on whatever you like. A tip I've learnt from the games, is that Rapid Spin will get rid of Leech Seed, which I guess can help. :3