My thoughts about Mass Effect 4

I think you will be a Shepard still, but his/her son/daughter. Above Carla, I would say is my Male Shepard + Miranda's Daughter. My Male Shepard (Randall) had Red hair, and green eyes. Miranda has dark brown/black hair and blue eyes. Genetics state one of them will knock out the other, and have blue eyes(Miranda's), so this is Carla Anne Shepard! (Randy's hair, Miranda's eyes!) I hope you share what you think ME4 will be about. My nice, and beautiful friend Jessica made this artwork. Credit goes to her. So this is what I think happened with Carla:
She was conceived when Randall Shepard and Miranda had there romance. Miranda had the baby a while after Shepard's ship was taken, she asked Oriana to watch Carla while she went to meet Shepard, later dying. Shepard never got the chance to meet Carla, because he was KIA. Later finding out about her father, she joined the Alliance to prove her-self to her father. 
She went to Grissom Academy and trained under Jack, who later realized who she really was. (Image Created by N7Calibrator)