Hi there,
Welcome to the forum.
The first thing for you to decide is: Which style would you like to develop this plant in. Keep in mind it is still very young, and will require some 5 years before reachnig a state in which it will get close to becomig bonsai, if not more.
Once you know what you think would be a nice style, then we can advice you on how to go about it.
I would suggest -if this is your first tree- to go for an informal upright style, as it is close to a natural shape, and therefore easiest to get a realistic result..