Thank you! It was messy but fun to do - I'm glad I was working on a small canvas or those colors would be everywhere. (Yuck, didn't know these files were so huge - I don't usually post stuff from my phone but that's what laziness will get ya.)
I bought a bag of these colored tissues because I thought it would be an easier approach to the look of watercolors. Tried them first in my mini-art journal, and they bled through the next 3-4 pages.

The pages in this little 5x5" art journal are thin, but I thought they'd hold up better than they did.
I was trying to be cute with the first page, right side, of my art journal, cutting a little heart-shaped hole in the center so the next page would show through with another heart. All I did with that bleeding tissue paper was wet the page so that it ripped in two places and the dyes ran everywhere. Freaking mess!
The dyes trashed the left side too, which is the inside part of the cover. Since the cover was made of sterner stuff, I first coated over the stain with white gesso, then with thick white acrylic paint. It was heavy-bodied enough to make the swirly lines and carve out a heart shape, then when it dried I added the top colors - again, acrylic paint, very watered down so some white could peek through around the ridges.
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I used little pieces of blue and yellow tissue paper in various layers. Bled through and made a mess. Below is a shot of 2 pages in, and you can still see the dyes running amok. I chose to draw flower petals around one lone blob and pretend I planned it that way.

Then reached for colored pencils to sketch a little more floral stuff, but I'm not much of a sketcher. But at least I could turn the page and get away from the rest of the stains!
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I still kinda like the bleeding tissue paper, but right now it has limited use for me. btw, I've since reached for the glue stick and glued 2 and 3 pages of the mini-journal together, so they're able to take my abuse. Poor little book.