Helen, I have watched a number of your Photoshop classes which are fantastic. This one I loved. I made stripes and also added watercolor lemons I painted on top the stripes. I'm sure you have a class on making polka dots. Here are two stripes I made.

Made the above from the watercolor splash I painted below:

 

Here is my diagonal black and white stripes:

 

Thank you for sharing you wealth of knowledge.