I’ve just fallen in love with this project, and it was so easy. Being an avid crafter, I had all I needed on hand .... two sample sized colors of exterior water based paint, hide glue or crackle medium, J-B Weld, a small metal flower, one button, and a fan (opt). I’m impatient, the fan speeds up drying times.
Just a little note about crackle mediums before we get started. They are readily available in just about all home improvement and craft stores, and easy to use. Hide glue is my choice for crackling. You can find it in hardware stores for around $9. Always painting something, I usually have some mixed and ready to use.