For me, this technique was a crucial 'a-ha' moment. About 15 years ago the concept of 'direct-to-paper' or DTP as we would refer to it in our yahoo groups back then was all the rage with Cats Eyes pigment ink pads (colour box) where the shape was specifically suited for DTP, and I also loved using the gorgeous VersaMagic ink (Tsukineko). Those colours were (and still are) so soft and chalky, and if you dried between layers you could put the lighter shades on top of the darker ones to soften back, or even successfully stamp the white on top of dark blues. Then we would stamp our preferred images in Brilliance Black, which was juicy, black, and dark, and easy to emboss in clear powder. Or background stamps in other lighter shades. he effect was very similar to this below, however, the piece below is done with Fresco Finish Acrylic Paints.
Of course this all happened in the years before Distress Inks and Ink Applicator tools were invented! LOL Hard to imagine now isn't it! We did fabulous watercolour techniques with Adirondack dye inks, as they are non-permanent, I really think that colour palette has stood the test of time. I must have bought my first Lettuce and Cranberry ink pads about 19 years ago, and they are still reinked regularly, and still going strong.
So the challenge with all these inks was how to get the ink onto the paper backgrounds, and have a variety of blended colours across the entire piece. And, if possible, layers. And thus, about 11 years ago from my very own head was born the concept of 'corner-corner-side'.....11 years ago. Hmmmmmm....So it must have taken me at least 8 years to figure it out then? LOL
So the natural progression was to also do this technique with distress inks, you can get some great effects when you apply, then knock back the concentrated ink with a baby wipe.
I also have done this for many years with acrylic paints, which I do find, are much easier than inks to get the zones to blend. Remember, the light shades like Vintage Lace and Snowflake, Moonlight, Ice Blue, Sherbet, Honey Dew are your blending friends!
So take a look at this video, and maybe 'corner, corner, side', even though it's quite an analytical and structured process, will help you achieve totally random, blended backgrounds. I hope you enjoy it!