Once the chipboard is "rough cut" check to make sure that there are no gaps over 1" between it and the area being fitted. If you're working on an area that isn't flat or doesn't provide support for the chipboard, you'll need to copy and jigsaw-cut the shape on a piece of scrap 1/4" or 1/2" MDF to serve as a support board under the chipboard for the next step.
Using the Profile Transfer Wheel, carefully trace the shape onto the chipboard. Make sure to choose a wheel size that is small enough to make full contact with the shape being copied and secure the chipboard (have someone help you if necessary) so it doesn't shift during this step.
With extremely simple shapes, the copied shape may be close enough to fit accurately. As you can see, this isn't the case here. We have a template that is approximately 1" smaller than thedesired shape. The trick to "getting back" the missing 1", is to place the template onto another piece of chipboard and tracing it using the same Profile Transfer Wheel used earlier.
Temporarily securing the two pieces of chipboard together with double-sided template tape will help the pieces from moving and increase accuracy. Trace the shape carefully for best results and take your time cutting the final template.
The template fits very nicely against the trunk panel and will help create a panel that fits perfectly.