By using white embossing powder on my watercolor paper I create a 'resist' to the ink used for watercoloring. I really saturate the paper so that the colors that I use will blend well as you can see in the pictures.
I also did a slight treatment to the inside of each card as you can see here.
I hope you enjoy the video and if you have any questions, please don't hesitate to ask! I love helping.
In the meantime, Happy Paper Crafting! ~Angelina