This is a great idea for teaching adjectives. I like how the project is built upon a theme. Each adjective describes popcorn. You could even change up the theme to coincide with your lesson plans. the only problem doing this would be that it is timeconsuming to change it up. It would require you to be able to draw a new one when you wanted to change it.
If students need a study guide to review over things like these for a test you could have them make this foldable. It really grabbed my attention so I'm sure it would grab the students eye and make them want to look over it. They may get creative if you have them make it, so they may pay better attention!
Love this idea :) -- "The incredible shrinking notes" Students start out writing a summary of their reading on the large index card. They are then given a medium sized card and have to take the info from the large card and condense it. By the time students get to the small index card they're getting to the main point/idea of the reading selection.