Thank you Chris for the class, it is stretching my imagination, especially the part where it doesn't need to 'look like something'! ;-)
I first could not see your Pinterest Art/Abstract Art folder under the Resources section, but I found you on Pinterest, and I am following you now. Pinterest is new to me, so I saved a few things from your board, including abstract shapes and color palettes. 
To implement my artwork for this class, I ended up choosing 4 colors; phthalo blue, a green teal (mix of viridian and light blue), a sand color (like ochre but brighter) and a vintage pink (pink mixed with green by accident). 

My first try ended up to be more about shapes, and then I tried to layer more. Let me know what you think!