I don't agree with your masteries, but that's just me, and your item order, which just might be the order you clicked and not what you meant, but 2 infinities definitely not needed on teemo, Mallet should replace the 2nd one.

Here's my personal way of playing with my favorite champion "The Great Teem" xD. But the Frozen Mallet may be replaced by the Infinity Edge. I hope you enjoy my method and I used it! Please vote and comment positive! I wish all joagadores an excellent game play and have fun and make good scores with my method! Cheers xDxDxDxDxDxDxDxDxDxDxDxDxDxDxDxD