Here are my mock-ups for comment.
This is the top and front edge of the panel, there will be a 15mm radius on the front edge plus about 50mm drop.
I'll have lots of questions for when I re-draw it all, but to start with: I have been drawing things in MSPaint and saving as bmp or png. Should I be working to a certain dpi at this stage matched to the printer maybe?
this is in the pixart FAQ:
"How should I prepare large format files for Pixartprinting?
The printing resolution for large format files must be between 100 and 150 dpi within the CMYK colour space (Cyan, Magenta, Yellow, Key black). Any images sent in RGB will be converted with a standard separation profile. The accepted recording formats are: PDF, JPEG, TIFF (although this format is not recommended due to long download times)."
I have access to the full Adobe suite but would prefer to stick with MSPaint if that will work.