Off to a good start.. Now, just let it grow for the next year. Meanwhile learn about pruning and the 5 styles of bonsai. Maybe join a club or find a good teacher. This way, next Spring, you will be able to prune with a little more confidence. Pruning is extremely important. If pruning is done incorrectly, it can ruin the style of the tree and even worse, kill off ections of the tree.. Good luck.
Rob