Wanted!!!!!Horse for share

Hi! My name is Nikola and I'm 16 years old. I also have a sister who is 13 years old. We are looking for a horse to share 2 days a week and up to 10-15mins away from Thaxted. I am currently doing my BHS stage 1 and before lockdown I was a yard helper (for approx 2 years) and I did jobs such as mucking out, poo picking, leading in a lesson, turning out, grooming, tacking up and of course riding! My sister recently just started but I have taught her everything I know. This would be our first time sharing. We are looking for a horse that is 14hh-16hh and not too young or silly! We can both ride in walk, trot and canter and pop over some small jumps.