How to create a giveaway?

You can't give away games in your Steam library, unfortunately. Once you've redeemed them, they are there to stay.

You need either games in your inventory or unused Steam redeemable keys from a trustworthy site like Green Man Gaming, Gamersgate, Humble Bundle, Groupees, etc. Games in your Library are there to stay.

Hello and welcome to steamgifts
This will probably answer your question

Since everything you need to know has been said...
One last tip: never post your email addy like this. write "at" instead of "@" and "dot" instead of "." or something else.
This way at least not every Bot will get your Email and spamm the shhh out of you :)

1. Click 'Create a Giveaway'.
2. Fill in the form.
3. ???
4. Profit!