Wow, this was such a great class and challenging to me. I do love painting both realistic and more abstractly but lack some confidence with abstract work. I stopped and took a few days to create this and tried to not go back and fiddle too much. I also painted mostly from tubes so that the colors stayed vibrant although I used a lot of paint lol. 
Will is such a fantastic teacher and leaves room for interpretation and is always encouraging. Glad I took the leap and the class!