Snaps are fun ... just make sure you are high in case you loose your orientation. Also the best is NOT to do a level flight snap in the beginning, climb at about 35* to 45* that will get you more accustomed to the way the plane handles. Try different stick combinations and see what the plane does for each. If you can try not to use full throttle, snaps with full throttle look great but you can also loose orientation fast. I love slow snaps (little to no throttle) with my plane set up with a lot of throw.

You will need a plane with a short moment (short rear portion of the fuse) for nice snaps. Something like a Sukhoi etc.