What do you specifically need help with? If it is the opening post of the story (or the character's part in the story), doing a simple post establishing the setting and character would be fine, I think. Introspection, get to know the character on a surface level at least and how they think and relate to the setting - assuming they've been awake for a little bit. If they are just waking up from cryo-sleep, then you could do a jump right in from that point.