Wip out and Medium Technique

I ám experimenting with glaze mediums.For example I paint to an already glazed surface a color mixed with a water based medium(a solvent with which paint is thinned to the proper consistency).Then I add a drop of medium in this wet paint mix ( for example with a brush)and crystals occurs.

It looks like an interesting technique, which I like to invest further.About the above picture ,I also did wet in wet painting, and wipe outs with the wipe out stick,also in the wet medium.
Rob