I did link where there was one with more information than I could give you
Shake the primer & spray the lid. allow the primer to dry for a full day
The primer will allow the paint to stick to the surface of your lid
Flip & paint the canning lid with arts and crafts paint
Creative ideas include painting a silhouette, painting stripes, painting dots, drawing faces.
Decorate with glued jewels or sprinkles of glitter
Dry for & hang on refrigerator.
Also look at this cute idea canning lids frame magnets using the lids and the rim from Pebbles in my pocket blog