AI need to paint a sunset on a 6" buttercream cake. How would I go about it? Can I put it in the fridge? Its almost 100 in NM and no humidity so Im not sure if I can leave it on my counter with the swamp cooler running. My house gets maybe 78 degrees at the coolest during the hottest part of the day... help please!

When I wanted a tree bark effect on some buttercream I put my cake in the freezer for about an hour and then brushed on the color that I wanted.  But I just had to do just a little bit of dark brown on chocolate buttercream. I don't know how it would work out if you have to do a lot of painting. You might have to paint some and then put it in the freezer again so that it stays hard. Hope that helps a little :)

Keep your cake cold so the  buttercream is hard.  I've painted a couple of times and I use gel paste that I thin with lemon extract or vodka.  Use the white gel paste for more opacity.  When your BC starts to get soft, stick it back in the fridge.  I think the worst thing is humidity and if you don't have that, then you're golden.

These are what I've painted.  Not much but it was fast and easy!

http://cakecentral.com/g/i/2393179/a/2393865/double-birthday/

http://cakecentral.com/g/i/2002354/a/1999796/leopard-print-birthday-cake-for-friend/