Each lead character (Altair, Ezio and Connor) has a different hood style. All 3 seem to have a gusset in the hood, though, just in different shapes. Ezio seems to have 3 different ones, one for each game he was in. It won't look like a "normal" hood on a hoodie, because it isn't. The gusset with the signature beak shape changes it a bit, it should be flatter on top of your head. (A regular hoodie is a 2 piece hood, whereas the assassin's hoods are all at least 3 pieces)
You should also use non-stretch fabric.