How to install new countertops and make sure drawers open?

To install new countertops, first, remove the old counters by unscrewing them from the base cabinets and carefully lifting them off. Measure and cut the new countertop to fit, ensuring it's level and properly supported. When reattaching the countertop, ensure it doesn't obstruct the drawer slides; check the alignment and clearance to guarantee that drawers open smoothly. Finally, secure the countertop in place and make any necessary adjustments to the drawer hardware if needed.