Wall art of Doctor Emmett Brown from Back to the Future.

I tried to setup the colors to minimize required color changes. You can also split the part up into individual objects to modify how you see fit.  Frame designed with open back to save filament.  Support only needed on the frame where it goes over the hook.

Base is 220x220x2mm not including the hook. Black outlines stand another 2mm above the base.  Art print total Z depth is 4mm and frame is 5mm.

If you try to work from the STL instead of the 3MF be aware that you will need to change the purge tower width to 15mm or less and move it as far left as possible. Position the main body on the right edge of the bed and up towards the top so it doesn't interfere with the long purge line done at the beginning of the print. The 3MF profile I uploaded has these changes made already.  For the frame make sure you enable supports.

With pieces this large and flat, bed adhesion is important.  I washed my textured PEI plate with Dawn and hot water before drying then cleaning with IPA and had no adhesion problems with the bed at 55c.