i stretch for 5 minutes every day before i go to bed. i hold each stretch for 30 seconds. i start off with my feet touching and touch my toes, hold, then step out so my feet are a little bit further than hip-width. i reach to my right foot, hold, left foot, hold, then hold in the center. i move to floor stretches next, starting with butterfly, then touch my toes with my legs and feet together. then i do a straddle as wide as i can and reach to right foot, hold for 15 with right hand holding foot on outside of leg and left arm above my head. then i bring my left arm down to the inside of my right leg. i repeat this on my left leg. then i reach as far as i can to the center of the straddle. finally, since all of the reaching leaves my back a little sore, i do an upward facing dog and a child's pose.
i hope this all makes sense! you can always take classes at the rink, at the gym, or just ask your coach for some suggestions.