1) Grain , grain, grain - clearer the better
2) red cedar needs to be soaked a LOT (at least 24 hours in warm water); and steamed a LOT (start at 60 minutes after steady temp is reached)
3) assuming the ring you are making is not load bearing: if soaking in water does not work soak in 10 - 20% ammonia. this works, but you will have to experiment. if you leave it too long it turns the wood "mushy." soak in plain warm water for at least 24 hours, then soak in ammonia solution for 2 - 4 hours. then steam in regular steam. use a ventilation fan (i've used a box fan) to the outside. i've not used ammonia in the steam generator (my box in inside my garage) but i know that's an option if you are willing to take some extra safety measures. and you will need to thoroughly clean your generator.
4) you will need patience and experimentation, but take courage: i've bent red cedar for skin-on-frame kayak ribs. success is possible with experimentation.
5) Grain , grain, grain - clearer the better