There is a project painting to do over at WatercolorWorkshop (an online Yahoo group). It's a beautiful photo of a candy apple, lots of reds and blues and shine. I tried it on 1/4 sheet of Arches cold press 140# paper and wasn't that pleased - I think I overworked it (what a surprise!). The photo looks better than the painting does.
Anyway, I thought I'd just go for it on yupo and see what happened. I didn't pre-draw anything, but drew with the brush in red and then worked the rest of the color and shape in as I went. I see I need to refine the stick a bit more but I'm happier with this one than the other.
Again, this shows you what a difference you can get by just switching your paper surface and nothing else (although I did roll the bg table in the yupo painting with a sponge roller over the paint while it was wet).
Does it make you want a candy apple? Me, too!!