Loved this class, instructions were clear but it was just me being a newbie in Illustrator I encountered small problems.

First thing I learned that I had to disable 'Align Art to Pixel Grid' option so I could align my triangles perfectly.

Second, on the last project I completely forgot that you must not change the colors of the base triangles randomly after you filled in the middle bit with triangles. Because every color that's on the left has to repeat on the right, and every color that's on the bottom has to repeat on the top part. 

 

Thank you for the great class!