Glass painting tips

Hi all

I am recently in to glass painting. Experts please help me. I have done one painting and it came reasonably well

I seek some clarity. How to give 2 color effect in Glass painting using Glass colours(using solvent based and water based shades from Camlin) ? A dark and a light combination in flowers example and how to give that Tanjore painting effect in glass painting.

Also I would be grateful if anyone explains if I can use Fevicryl Acrylic colours in glass painting

Awaiting guidance from experts.

Thanks
Hema