double approach somehow. He ignored your approach, and you should take advantage there. Your move is thin.
Take the corner at 3-3. If you let him get the corner later, it's too big. Your move is all right in protecting the thinness, but letting black force with the knights move cap isn't ideal.
Don't invade here. If you want to invade, do it one space lower. The end result of this is that you give him a ton of points, while getting not enough influence in return.
After this black derps the game away, so I'll end comments here.
: P2 is just wildly inappropriate, however you look at it.