Cut out any dead, damaged or diseased branches from the juniper bush. Hold the dead, damaged or diseased branch in one hand and hold the pruning saw with the other hand. Make the cut with the pruning saw at the base of the dead, damaged and diseased branch. Saw through the branch to remove it from the bush. Repeat this process on any dead, damaged or diseased branch in the juniper bush.
Locate the healthy branches you want to prune back. Find a side shoot, an area of the healthy branch that is growing a tuft of needles, and cut the healthy branch back to the tuft of needles with the pruning shears. Trim the branch off at an upward-facing angle right in front of the tuft of needles. Avoid cutting into the side shoot.
Prune the juniper bush's healthy branches from the top to the bottom as described in Step 2. Make sure the bottom of the juniper bush is wider than the top of the bush. Prune the bush so the top tapers off at a 20- to 30-degree angle to avoid shading the lower branches.