well depending on the rresin you can lightly sand it,prime it,sand again with a finer grit sand paper,wash off ,paint a base coat with spray paint,acrylic or airbrush, as far as airbrush paints creatix in my opinion is the best,relitivly inexpensive too, and as far as sealing it you might want to go get a clear matte or gloss spray paint depending on the application, should be it i think,chime in guys and gals if im missing somthing