don't know how to post pics. If I cut a piece out of a closet wall haow do I cover the seams I make. Told you I was handy but not to smart.

Anyone have an idea on repairing a 6"x6" hole in the wall? There is no way to get a new panel to match the old stuff "Clayton 28'x80' doublewide" made in 2000. When I called and asked about the panel I could hear them snickering at me in the background. I was new to mobile homes ...