Failed hair attempt! Help, where did I go wrong?

So I found a tutorial on converting hair from the Sims 3 to the Sims 4, and I really wanted someone else to do this, but since no one has I thought I'd do it myself. Big mistake I suppose, as this is how it shows in game. (Not to mention the sides also show part of the head.)

Is this a texture, mesh or just I failed issue? I tried it as SimGlass shader first and it was way too transparent, you couldn't see the hair. SimSkin looks like the picture below.