Practicing at home can be an effective tool in sharpening your game when you can't get to the range. If you have enough space to shoot your bow at 3, 5 or 10 yards safely you can use links below to download scaled targets to shoot at each of those distances.
But if you don't have enough space, or a safe area to shoot indoors, you can still download the targets to use in aiming drills. Just place the target at the distance its scaled to and use a pen or pencil in your aiming drill.
Assume your normal stance.
Place the pencil/pen in your bow hand and raise to the target.
Practice keeping the tip of the pen in the X for the same duration as your shot cycle.
For best results try concentrating on the X once your pin crosses it. Concentrate on the target and not trying to keep the pin in the X. You will see that its actually easier than you think. When you actually shoot your bow, you can put this technique to work and see the results.
Download the Target for your desired distance: