Hi attached is a picture of the wall where I want to install a picture frame molding, one large rectangle only. The soffit crown on ceiling is not centered on the wall (constructional constraints). Option 1 - leave same reveal in left and right of wall. So install left bar of frame at the leftmost pencil line, and the right bar at the right pencil line. Option 2 - center the frame with the ceiling crown. So, install the left bar of frame on the second from left pencil line, and right bar of fra,e at the right pencil line. But this will leave uneven reveal on left and right wall. Option 3 - align the frame with the corners of crown. So, install left bar at the left most pencil line, and right bar at the right wall corner. This will again leave eleven reveal on the left and right walls.

Also so open to any other options for you expert designers. Thanks.