Realistic ghost flames



Anyone painted theese! Im just about to put them on a gastank and Im thinkin of put some silver metallic in the white instead of just plain white
and my question is! Do I get more deep in the flames or do I just make them pop more and ruin the ghosty feeling of the flames?
The basecolor is dark blue with a touch of Black pearl and Im gonna finnish it of with a couple of coats with blue candy