Christmas stocking model for Garry's Mod

The texture is temporary, Google Images is being unhelpful, also, does anyone know how to fix those strange black triangles? I've tried a bunch of stuff, also, i don't have backfaces showing in Milkshape 3D, so they aren't backfaces mixed with... frontfaces...? Eh, i don't know, it's not done yet of course, i still need to add in the part of the stocking that's used to hang it on a wall