Top fansubbing tips
1 - Always sub something somebody else is subbing.
2 - Make sure you use a tiny font which is unreadable from more than six inches away from the monitor, it also helps to color code the subs with the characters hair.
3 - TL notes, always put a TL note for every Japanese word you don't feel like translating, its more authentic that way ^_^
4 - Viewers love to hear your opinion on a show, why not drop in a few annotations describing your feeling on a particular scene?
5 - Make sure your karaoke subs are as large and obnoxious as possible with english, romaji and kanji lyrics, do this with insert songs too!
6 - Make sure you fill the credits of the show with the names of all your cool fansubbing buddies.
Following these simple tips will make your subs a big hit!