Effective DIY hacks include using painters’ tape to create exact paper templates of your artwork on the wall for precise placement before hammering nails. Employ a laser level or smartphone leveling app to ensure straight lines for gallery walls. Try command strips for lightweight pieces to avoid holes and allow repositioning. Use a measuring tape to confirm equal spacing between artworks and keep the center line at eye level, about fifty seven inches high. Planning and patience in these steps result in professional-looking art installations with minimal tools.