Stencils and outdoor paint.
Add silk flowers that you have touched up with metallic paints. Use Velcro tabs if you want to be able to change the decor with the season. 😊
More photo paints? Paints for photos probably aren’t UV Stable, are they?
Please explain more.
If you're going to paint an outdoor mail box, you'll need to use outdoor paint. A fast way to do it is to use spray paint. Do several light coats, not one heavy coat of paint. If you want photos on the mailbox, make copies and glue them on with a glue designed for outdoors, then seal them with a clear coat - a spray clear coat works well to do this. Wishing you the best.
Paint your mailbox with outdoor paint and outdoor sealer. Several light coats are better than one heavy coat. Allow to dry between coats. Good luck with this project.