I am sure there is a thread about this somewhere, I just couldnt find it. How do I paint luster dust on Royal Icing? Do i mix it in wet royal icing, or paint it on with vodka when it is dry? Doesnt the vodka melt the royal icing?

dont mix it in with the ri, it really doesnt work the same. it is however a good idea to colour your ri the same colour ie: colour it grey for silver ri.
mix it with alcohol, and just paint it on (you can dry dust too but the look is different). as alcohol evaporates so fast, it doesnt have a chance to soak into the icing or anything.
xx

Just be careful not to oversaturate - I did ruin a few RI letters once b/c I went too heavy with my luster dust mixture. They never fully dried again and crumbled. Most of them came out ok and dried just fine, but I went a little heavy on the ones I ruined. FYI.

I agree with the above posts, let the RI dry and then paint on a thin layer of the "paint" to get the desired affect

Check out the NYE wedding cake in my photos, the scrolls are royal icing painted with lustre dust that has been mixed with vodka. I let the royal icing dry hard over night first.

I have tried in the past to paint RI letter transfers, and they did crumble. Was it b/c the paintbrush was too wet? Whats the ration of lustre dust to vodka?