By Completeing level 5-12
there is no way to make your own custom Angry Birds level YET
3. Harvest Above. Level 14.
play it
in your bum
yes
Level 9-13 is in "The Big Setup." There are three birds, and all of them are big red birds.
When three stars are achieved on every level of Angry Birds, the player will be awarded with five golden eggs.
You beat the level and you can move on to the next level.
its already out there...
2233241
with skill
You have to complete the level and/or get a good rating/score.