I wouldn't call it a sketch.
My new artwork, isn't really an artwork, more of sketch, actually I wouldn't call it a sketch but I will stick with that. So here it is, my newest sketch, the big reveal you would've already seen it, but I have said it now.
So what I did here was draw all the shapes, the triangles, squares, ovals and oblongs (a rectangle is the group of squares and oblongs) then did all patterns. When I chose the colours I tried not to choose the normal colours like red, orange, brown, blue and green so instead I chose red-orange, olive-green, dark red you get it, surprisingly I found it really difficult you are limited to not a lot of colours. In case you were wondering the orange colour on the oblong is red-orange. I really think you should give it a go.