I am in the process of re-purposing an old window pane into a piece that is going to hang in either my living room or kitchen, I am not sure where yet.
I have some ideas on what to turn it in to but right now I am leaning towards making it into a bulletin/picture board of sorts.
1-2-3 Primer is the best.
Here is a tip for you. When you are done painting for the day and want a clean and fresh brush to start with the next day, wash your brush out thoroughly with warm water, wrap it in a paper towel and leave it in the fridge. It won't stiffen and ready for the next use with no caked on paint!