I am also a visual learner and I foun a couple of tricks in college to help me study.
- Flashcards! Flashcard are a great visual way to study. You can even make them online if you don't want to do a lot of writing (try Quizlet.com). I personally wrote out all my flashcards because the writing helped me to remember. Sometimes I would color code them by chapter or unit.
- Make an equation/material sheet while you study. What do I mean? Take your test material and pretend you could take one page of whatever you wanted on it to the test (ex: definitions, equations, lists, pictures, etc). Go through your material and write down the things you forgot or don't feel confident in remembering. If you have homework or practice questions you can work through, try them with your equation/material sheet nearby (don't use it unless you have to) and then when you finish highlight on your material sheet what you didn't know. That will help you focus on what you should study.
- Try studying with a friend. It helped me study to try and explain something to a friend. A lot of times a friend would ask me a question and I would discover I forgot to study that section...so then I was able to go back and focus on what I did not know.
I hope these tips help!