There are so many beautiful, highly detailed brass, bronze, and silver charms being sold nowadays. Most are quite large and don’t need anything additional to stand on their own other than a matching chain. Sometimes more is not better. You can though enhance the look without taking anything away from the piece. The majority of charms being sold are not solid bronze or brass and true glass enameling is not possible because they cannot withstand the high temperatures required to melt the powdered glass. Cold enameling is your next best choice and is quite durable, cheaper than glass enameling, and your choice of colors is limitless.
I recently did a video showing this process, while not using these two exact same charms, the procedure is the same. You will need:
Resin – Long working time is a must. Envirotex, Famowood, Easy Cast, etc.
Powdered Pigments – Pearl-X mica powders or even powdered eye shadow. I would recommend against liquid colorants as it is best not to change the chemical properties of the resin for this process.
Mixing sticks and some sort of applicator – I use a plastic palette spatula and a paintbrush.
Palette for mixing – plastic is better.
Even though resin is liquid, it is not water. It is a much thicker substance and the surface tension is your friend especially for a project such as this. There is an art to applying resin to a surface with no boundaries. You want to apply enough to cover the surface and dome it a little bit but too much and you will break the surface tension that is created keeping your resin in place. It takes practice.
Below is a video I did cold enameling some pendant pieces and hope that it will give you some ideas you can take and run with.