How do I level up?

info in the top faq button:
http://www.steamgifts.com/about/faq
http://www.steamgifts.com/about/guidelines

this also helps:
http://www.steamgifts.com/discussion/XaCbA/
http://www.steamgifts.com/bundle-games

btw, you don't trade giveaways.
you create them, someone wins, you deliver the game, and when it's received you get contributor value (cv).

Most everything you want to know is here in the FAQ.

Gifting those will level you up to L1, though higher levels will take much more games. Just look at me, over 800 giveaways and still not L10. Just don't expect a level for each giveaway, and you will do fine.