How to Snapshot

As a hockey player there are two shots that you should practice ALL the time until you are a master of both, the wristshot and the snapshot. The wrist shot will provide you with a very powerful and accurate shot, while the snapshot will give you an accurate shot with a very quick release. The snapshot is the best shot to use while in close to the net because you don’t want to give the goalie any time to set up, or any indication that you are about to shoot. The trick to a good snapshot is not giving any clues that you are about to shoot, getting the shot off in a fraction of a second, and being accurate. 

TJ Oshie's near perfect snapshot

First is the hand location where your hands are important for generating power on your shot. For the snapshot I like to have my bottom hand a bit lower than with the wrist shot, and a bit high than with the slapshot; I usually put my bottom hand close to the middle of the shaft. 
Body position is next. With the wrist shot your shoulder should be facing the net, but with the snapshot the chest should be facing the net. The snapshot is mainly used while you are skating towards the net and you are in close. You won’t have time to set-up for a wrist shot so you will need to be able to snap the shot off right away.
Third would be puck position. You want to have the puck to the side of your body (where it would be if you are stickhandling with the puck on your shooting side). You need the puck here so you can shoot it whenever you want.
The key to a good snapshot is  to get the puck off as fast as possible. All you want to do is get your hands out in front of your body while still cupping the puck, and then really pulling back with your top hand and pushing forwards with your bottom hand.