Look for a piece of very thin tin sheet at the hobby store. It should be just thicker than tinfoil. Trace the other part with tracing paper. Cut it out and place it on a piece of paper. Trace it onto the paper and cut it to check the fit. Once it's fit, trace it onto the tin sheet. You can use a magic marker or fine paint brush for the outline and lines. Use a straight edge and ruler for the lines. Alternatively, you could make a decal to put on the tin once it is installed. You can make the decal on a computer. This should be a moderately easy job if you are up to it. BTW, the tin can be cut with most scissors if it is thin enough. I have a hobby pair that is used for cutting plastic RC car bodies that works well.
George
