I would say that is average to above average at that range. If you can do that consistantly at 25 or 30 yards I think that is good enough. The vitals on a deer are larger than that. Just make sure your range is right and you pick good shot placement. Learning deer anatomy is huge help. Depending on the angle of the deer you need to pick a different entry spot. I always aim for the exit and try and envision what the arrow will strike on the way thru the animal.

I agree with the above. Shoot some arrows the way you will hunt and see how well you do.
Wear a hat and face net if you are going to when you hunt. And the camos you intend on wearing. If you where gloves, you should practice with them to see if it changes your grip. And if you are shooting from an elevated stand by all means practice from one before you hunt. Even if it is just for a short period of time. This way you will now how the arrow impacts from a stand. Remember to bend at the waste.

Paul