Patience and dedication. It will take a long time to reach a competitive level, and most competitors will have been training since the age you started, 5 or younger, without the break of years inbetween.
Pay attention to your coach, and practise what you're taught, in those group lessons, on your own time between lessons. Off-ice training as well, for strength and flexibility (ballet lessons are good, if possible).
And the best boots and blades your parents can afford. If you do decide to pursue this dream seriously, after you've been in the group lessons for awhile, come back here and ask about the right equipment to wear because it will make a big difference in how quickly you progress. The skate sets sold at sporting goods stores or, probably, at the pro shop at your rink, won't be good enough for serious skating.
I hope you enjoy the lessons enough to take your training seriously. The competitive stream leading to national and international competitions will be out of reach because of your late start, but there are many enjoyable local competitions where you'll meet other skaters like yourself and can collect medals! Good luck and have fun!