I create what we call 'models' of the Sun. They are not models made of wood or plastic, but are just a load of numbers describing, for example, the Sun's temperature, density, or magnetic field. These numbers are my prediction of what I expect to see on the Sun. Since a table of numbers is not very easy to interpret, the best way of looking at my model Suns is to turn the numbers into images and movies.
Here are some examples of computer models of different solar features.