1 start with old headliner for a pattern carefully cutting it apart
2 trace the parts onto the desired material, I used signplast for it's lightweight and longevity
I did two headliners and a trunk lid cover so I spaced out the tracings to have some left over large enough to make that also.
3 carefully cut you material to shape from the tracings with signplast it is a little tricky because it is like corrugated cardboard, you will have to clean it up gently with a razor knife


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