My limitations: Use sticky notes; Use round shape; Use photography.
Use round shapes and Use photography made me think of Pop art and Andy Warhol's Marilyn Monroe. screenprintting.https://www.moma.org/collection/works/61239
I also researched more about Pop art.
First, I found a picure of Marilyn Monroe and add color halftone filter on it in PS. So the picture were composed by many cricles after editing.Then I printed the picture and used it as reference.
Second, I cut sticky notes into different sizes round shapes and put these cricles as the picture's pattern.
Finally, I took a picture of my sticky note cricle Monroe and edit the picture in PS for example adjusted Caurves/Hue/Color Blance/Exposure .