If you used a damp cloth to clean the frame, either let it air-dry or wipe it down with a dry cloth to remove any excess water.
It doesn’t matter if you remove some of the old paint in the process, as you will be painting over this anyway. All that matters is that the surface is smooth and that the frame is clean.
Only some mirrors have a removable frame. If you cannot see any screws or an obvious way to remove the frame, don’t try to force it as you could end up damaging the mirror. There are ways to work around painting the frame if the mirror cannot be removed. If you really want the mirror to be removed but you cannot see how to do so yourself, take the mirror to a glass shop. It can be professionally removed and refitted once you have completed painting.
Newspaper or thin cardboard is ideal to use.
The petroleum jelly can easily be rubbed away once you have finished painting, which will also remove any paint that gets on it.
Chalk paint has a very smooth finish and will dry relatively quickly. It also has no smell and it is safe to apply in areas that aren’t well-ventilated. [8] X Research source A round brush is the best to use for chalk paint and mirror frames because it helps the paint to properly reach into all of the details. [9] X Research source
It can be helpful to lay newspaper or a tarpaulin down underneath the frame before you begin spray painting.
Always follow the recommended drying time on the label of the paint that you are using. Drying times may differ slightly than what is recommended due to the climate. For example, the paint will take longer to dry in a humid environment.
Any paint that is on the petroleum jelly on the mirror will simply be wiped away with the paper towel.
If a professional glass shop removed the mirror, you will have to return to get the mirror placed back into the frame.