Japanese artist Oki-Chu makes some pretty trippy artworks which, according to her website, rely on the good ol' trial and error technique. At first glance, some of the paintings look like neon-coloured abstract crazy, but on closer inspection you'll see a lot of hidden treats (like a gorilla hiding in the corner) and her less obscure artworks also have lots of clever little details. From black and white sketches to rainbow paintings, Oki-Chu's portfolio covers a lot of ground.
After studying design and illustration, Oki-Chu moved to Tokyo and has since taken part in a bunch of solo and group shows.You can also see her creations on tee-shirts and caps (some of which you can buy online).
More at oki-chu.com