how do I increase my level?

by giving away games

you get full value for non-bundled games, 15% of bundled games, and if you give more than 5 copies of the same title value will decrease 10% per extra copy.

http://www.steamgifts.com/about/faq

I paused my trip to leave you this seal:

View attached image.

I hear that you can get a level increase by not having a scumbag terrorist avatar

Okay, not really. But it might help you stay off some people's blacklists.

shadowen lol you got it wrong, my previous steam name was a Osama Been Lagging, thus the pic is dat retard but shaking and stuttering (lagging...)

throw money into strangers steam accounts.

By creating Giveaways?.
Non bundled game=Full value is added towards your level
Bundled Game (Humblebundle,Indiegala,bundlestars....etc)=15% of the original value.