The keys to a professional-looking baseboard installation are measuring properly and cutting the pieces properly.(KatarzynaBialasiewicz / Getty Images/iStockphoto) Q: I am redecorating my living room, ...

I cut my two long side pieces of casing first and tack them in place. You make 45-degree-angle cuts because the door and door jambs have 90-degree angles at the top corners. I tack the side pieces of ...