You will basically be attaching your door panel template to the wall at an appropriate height such that your camera will be at the same height when taking your pictures. For my example, I am using a fairly simple template - but it could be a more complex shape and the result should be the same.
Here is the Inkscape procedure I used. It works pretty well and will get you pretty close. I would expect that after you cut your first panel, you might do some slight edits to the DXF file to tune it in to exactly what you need for a perfect fit.
Also - instead of cutting a test part first - I would suggest using a Sharpie pen holder attached to your torch and drawing the part on a clean piece of metal or paper, cardboard, or large dry erase board using the appropriate marking pen. Then edit your drawing as necessary before cutting your first part.
David
