Treat each attempt as a small experiment: predict the path, watch what actually happens and change one part of your drawing.
Plan the route first
Use HappyGlass as a starting point for exploring drawing puzzles. Read the level's instructions, then identify the source, destination and obstacles before drawing. For a level involving falling objects or liquid, think about where support is needed and where a gap could let the flow escape. A clear route matters more than a complicated sketch.
Learn from the first failure
Watch the earliest point where the result differs from your plan. Adjust that slope, gap or support on the next attempt; changing everything hides what helped. Check any drawing limit shown by the game. Once a solution works, try simplifying it only if you enjoy the extra challenge.
