T&T Creating vol routines?

[HeidiDoesTrampoline]

Hi, I'm in year 8 (7th grade , i'm from the uk lolll) and I'm on badge 11 (Bg trampolining scheme) or NDP level 1/2 and i've been doing trampolining for abt a year. I was just wondering , how do u guys make vol routines , because i have an inhouse coming up and for my badge i have to make a routine. My best skills are tucked baranis and back somis. Thanks for the help! xx