Out of curiosity what do you use for your white paint? I find that not all paints are the same.
I like the durability of a good quality acrlic paint, but I don't like a glossy finish when it dries, so I like to mix an acrykic paint white a chalky emulsion. I don't measure the exact ratio, but it's just gesswork of an approximate 50 / 50 mix.
I may just be me, but I feel that 100% acrylic paints can sometimes look and feel a be plasticy. I'm always looking for the muted and slightly dull effect where the frame has an old look and feel about it. Another somewhat similar moulding is Simons M0099B which may be of some interest, if you ever need something similar in a smaller profile.
Another colour which looks quite nice with rottenstone is a sort of off black made from brown and black. I make it with Craig and Rose clove brown (or was it spice brown) and black. Be careful, as you mix it, it does not need as much black as you might think!
BTW, a very nice job too!
