Then comes the big question.......do I have to use watercolor paper to have some fun with watercoloring?
With watercoloring pencils and a very soft brush. I have made the same card on both a cardstock (left of picture) and watercoloring paper (right of picture).
I have posted the picture as an X-Large file so that you can get a close up. The cardstock from American Craft Smooth Cardstock did not fray from the wetness and abrasion of the paint brush.
Both gave a soft effect as water coloring should be. So it's just a matter of preference on the finished look.
Hope I have answered some doubts.
Sorry I posted this on my DIY section. Still thinking if I should add on a FAQ tab so any future comparison :)