I was really surprised with the realism of the atlas. In some regards it looks like an artist representation of a brother I never had (kind of creepy too)!!
Q4)
The accuracy of the control points is extremely. While working on the atlas I moved a fair bit quicker through placing the control points than I did on the above morphs. I later when in and used my atlas parameters to do individual morphs on faces. The results were less impressive than the above morphed images. where I put more time into them. I also had to use more generic points for the images. Where the images were already similar the result was decent, but where the images were vastly different the results came out much worse. For instance the control points didn't include hair points (since the guys all had short hair). The result is that the hair in the below images is much less believable than the above images. Surprisingly the atlas result still came out looking really good.