For this one I rollered on two coats of primer, then rollered on a coat of white paint. After that I put some masking on then cut out the inner part of the sign pulled off the outer part of the masking and then used spray paint, let it cure out a full day, pulled off all the masking, put a new sheet of masking on then cut it again along with cutting it out of the sheet and sprayed again.
For this one, I did the same initial steps of primer & white paint, again put masking on but used a V bit at 0.25mm dept to cut just the masking so I could pull off part to spray. let it cure, rip off the rest of the masking, put new masking on, and repeat for the next color. Had an issue with the grey getting pulled off, probably because I didn’t wait long enough. Touched up with some hand painting to fix issues.