a quick explanation of the tools on oekaki. Theres a tool that looks like a finger which you can use to make streaks. i often use it for effects and it makes good fire. the blender toool is pretty much for blendingcolors. i don't know much about water color, but it makes your drawing look awesome if you know how to use it. just fiddle a bit with the opacity, too. theres also a spray paint-looking thing which is a trunslucent, slightly fuzzy bruch-thing, which is awesome and i also like to use to make good clouds. the pen ias like the pencil, just a slight bit fuzzier and less opaque, fiddle with the opacity on that one, too. the pencilk is pretty much a simple drawing tool to make lines. theres a blurring tool that looks like a water droplet, a bit unnoticable but it works. i drew two lines and blurred the bottom one. the dropper is used to get the exact shade as a color already on your canvas. i drew a blue spot, changed colors to red, then used the dropper to get the same shade of blue. the paint bucket is used for filling a space in, but i noticed there is usually a white line between the color you filled in with and the line, so i dont use it that much cuz it ends up looking horrible. the burn tool makes colors darker and the dosge tool makes things lighter. hope this helps!
also, excuse my horrid handwriting, my tablet glitches when i try to write. grrr.