@Paul Marx – you’re not wrong, it is quite off–subtle–but it’s there.
It’s quite jarring if one draws faces/bodies a lot that the other can be a brother/sister/family more then the actual person.
@Karytsukino – I can point out where it is that’s wrong.
-The perceived depth of the eyes. It might be either a little too deep or a little not deep enough. Don’t take care of this till you fix everything else or else it’ll be troublesome.
-Regarding the eyes the slant on the sides for the shadow; you have it more parallel where it is actually more diagonal. Fix this first before you do the above.
-Also the eye distance – between the eyes themselves and the nose bridge – is two close but that may be due to your higher nose bridge on your model compared to the photo.
-The length of the nose and the bridge. Especially regarding the triangle arrow from the forehead sloping down into the nose. You’re is more sharp where the photo is more curved.
-The shape of the tip of the nose, it should be more bulbous instead of how you have it.
-The sides of the face–regarding the cheeks–it should be more pronounced and he also has more of a square-ish jaw. You just can’t really see it due to baby fat. But match a skeleton (square faced) ontop of his and you can easily tell it matches.
–Last of all the way his face is shaped and curved along with the chin length. Yours is too narrow and long whereas his is sharp but shorter and semi flat at the same time–since the sharpness is defined by the folds of his skin around the mouth–so just imagine his head to be more traditional anime like. That’d make it easier for you to start as a base.
Hope that helps.
The second one is really good by the way :). Nice work! Along with your 3rd!