Age of a Timelord

The Doctor: "Ohhh... I've lived too long."

I just remembered his dialogue with good old Wilf and had the idea to let the current Doctor age..

I'd appreciate comments and critique...
_{I wasn't sure if there might be a bit too much texture on his face.. hmm... does it look okay or should I change something? It's the first time I let someone age}

should someone be interested I made a small animation of the steps: [link]