What bjoern.gumboldt wrote is something that is really useful! You want to make longer and abstract words into smaller words or sounds that you can create images for.
I also create images based on association. So say you have the word time. Time is abstract because you can’t see it or hold it right? So the images I would create is a clock because a clock tells time. You mentioned the word Integrity. The image I would think of is the 16th USA president Abraham Lincoln because he was about integrity.
Hopefully you can see how association based images create can be helpful when creating images but might not make sense to other people. For abstract images, I either use association based images or break the images into parts that I can create images for!