It's important to clean your glass of any cut markings or fingerprints, oil residue etc., before you begin painting. There are a lot of great tips on the Internet on products to use to clean your glass from water to vinegar and alcohol.
White vinegar works well to remove all finger prints and residue without leaving a streaky film. I also like to use 70% Isopropyl alcohol spray from Walgreens. Quick and easy, spray on a lint free towel and clean your glass. I have never had any firing residue problems with this product.
I also like to use this handy paint palette from Hobby lobby loaded with the individual paint containers with colors I am going to use for my project. You can print labels to put on the containers. (puttibg labels on the top and bottom assures you get the lid on the right container during clean up.)
It's best to paint on a light box so you can see the opacity of your colors as you are painting, they run between $ 60 and $150. If you can't afford a light tracing box, a Tupperware box with the pushbutton light works as a pretty decent substitute. Got the box at the dollar store and the light for $4 at Bed Bath and Beyond. Be sure it is a nine LED light, as the single lights dont spread enough light under your project. Just place bix upside down over the light and place the project on top. Move the box around as needed to get light where you need it.
Ceramic Artist & Teacher
_I will share various tips for painting on this page, I hope you enjoy them! Please feel free to ask questions or comment, it's always nice to hear from other painters and I am happy to help any way I can! I will be adding various technique packages to the online store and when I do I will post an update here to let you know a technique has been added. Check back soon tips !
God Bless & Happy Painting!