Cover art for the novel Paradise Passed, by Jerry Oltion, from Wheatland Press.

We see the two heroes watching aliens frolic by a bonfire. 

For this assignment, I got to do a spaceship, which has a unique design, explored more on the back cover:

The engine is in front, and pulls the rest of the ship, which is attached via a tether.  On the very back end of the ship are cargo pods and shuttles.  In the middle is a tree, the physical and spiritual center of the ship.

Here's how the final book cover looks:

Interestingly, a couple months after this piece was done, a paper was published showing that real octopi sometimes "walked" on two or three legs, raising the others high up as they moved.  They looked quite a bit like what I'd drawn, so that was pretty cool.