If you'd like your project to turn out as strong, solid, and lasting as if a professional woodworker built it, do what they do...use your tri-square to check for squareness after each cross cut. Edges on boards that will be edge-joined must be absolutely square, so carefully check all sides. If a cut is not exactly square, use a block plane to trim. It takes a little extra time, but the improved results will be well worth it.
Arrange appliances so foot traffic does not interfere with the cook’s work. Keep the refrigerator accessible to kids while steering them clear of the “hot zone.”