I just recently failed a physics test does anyone know better ways in which I can revise. I'm good at seeing things like diagrams because they're easy to remember.

Since you seem to do well with diagrams, I recommend practice at drawing free body diagrams more often. Don't worry about drawing perfectly. The key is to get all the given values in the correct locations so you get a better idea of what is going on.

Also, since you seem to be a visual learner, you should try to find ways to connect that learning style to nonvisual situations. For example, you can use a formula pyramid as the one shown below to connect various variables together.

The pyramid may seem a bit strange, but here's how it works:

For instance, let's say we want to find the acceleration 'a'. Circling 'a' leaves the f and m uncircled. We divide in the order shown from top to bottom to get a = f/m. This pyramid is the formula for newton's second law F = ma.