I am currently tinkering with a nice little app called ‘Corel Painter Sketchpad’ (came free with my Wacom tablet). Doing some rough drafts. No concrete direction here, but just putting something on (e)paper.
Here’s a concept sketch of a jungle foliage.
And here’s one of a space craft docking with a space station near a distant world. The craft looks almost organic, like a combination of mechanical parts and organic stuff. I don’t know what this concept will develop into, but no doubt it will be much interesting.