How should I properly prune the bottom branches of a Norway spruce tree?

To properly prune the bottom branches of a Norway spruce tree, start by identifying the branches that are dead, damaged, or crossing each other. Use sharp, clean pruning shears to make clean cuts at the base of the branch collar, avoiding leaving stubs. Trim back to the main trunk or a larger branch to maintain the tree's natural shape and promote healthy growth. Avoid removing more than one-third of the tree's total foliage in a single pruning session to prevent stress on the tree.