[header] How to cut crown molding [title] Work on one section at a time. [step] Start in the least-visible corner of the room, especially when installing molding with a design. This is because it is fairly easy to line up the pattern in each corner as you go, but the final corner will most likely not match. 
[substeps] In the first corner, draw a line on each wall that intersects at the corner along the bottom of the molding. This will help keep you aligned as you install.