Cut the plant back to the desired size. Do not worry about overpruning or damaging the ivy, because it recovers easily. Cut the ivy just below the point where a leaf joins the stem.
Cut off any dead or damaged branches.
Thin tangled plants out by separating all the shoots, and cutting off all but several of the healthiest stems.
Pin a remaining healthy shoot down to the soil with a hairpin or floral pin by laying it flat on the soil at the base of the vine. Continue to pin the shoot down in a shape spiraling outward from the center of the plant. This technique fixes ivy plants that look overly leggy instead of healthy and bushy, especially potted plants. Pin down multiple stems to make the plant appear extra dense.