How do I clean & prepare large old plastic flower pot for repainting?

Kmg30734387
by Kmg30734387
I planned to paint it purple with paint I already have in a can. I did not know if I could do that first then spray paint overtop of that. I do not have spray paint nor am I able to get it to match the color I have. I was told I could purchase a spray bomb at a paint store. I have never done this project before. Any advice from someone who has done this before would be greatly appreciated!icon
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