Be mindful of where you and your opponent are, and keep the pressure going. Since your Up B is hard to beat if they're infront of you, it also has the potential to stage spike your opponent as well. Should they dodge the first one, double jump and follow up once more. BAir recovers faster than FAir, but as soon as you BAir, your attack direction changes if you hold it long enough, so experiment with that I'd say.
Your BAir and FAir will likely be your tools of choice from above (UAir from below), while personally I find a mix of those plus the occassional DB setup mid air works wonders on opponents least expecting it. Since there's no edgehogging tactics, you have to be a bit more creative with how you keep them off. Another option is one that Darklink just posed on, and that's stealing the ledge, then BAiring your opponent when they're forced off. It's not 100% guaranteed to hit and keep them off, but knowing your options are always good.
Hopefully these help ya out dude.
