okay good. well you have the two neccesary elements and then fire and wind which is a good elemental combonation
So when possible use Fire and wind combos, because they are dealier and harder to block.
I like to start off by making clones, because tyou can do multiple simultaneous attacks, making it hard to block. fire and earth is a good combination
Imagine you are shooting a fireball at someone, what would they do? put out the fire with water, so you simultaneously attack with earth because its stronger than water, so worst case scenario they block fire with earth and then its earth on earth which is not a bad place to be
Try to think in terms of the next move. You might not always be able to do this because you will have to react to the opponents moves, but try to set them up so they are at a disadvantage.