I looked at uvs closely and found many stray pieces that were left after you cut out the unnecessary part. So instead of fixing that I remade it. New
package and
blend files
- select all uvs with A, choose the background image;
- enable sync, select the bangs, in 3d view press Delete - Faces;
- append the second hairstyle, adjust the first one to fit it with Proportional editing;
- select the second hairstyle, switch to side view, disable Limit selection to visible, delete everything that is unnecessary;
- create a new uv map from uv_0, assign the same diffuse map as the first hairstyle. Switch to Texture tab and change the hair texture to the diffuse of the first hair;
- optionally you can select the first hair, Shift select the second, View - Draw other objects to see the uvs of a different object;
- with the second hair selected, move the uvs of long strands to match the texture with long strands and scale them down horizontally. Those small uvs you can put in the space where the bangs were;
- after you're done, in the texture tab change the diffuse to that of the second hair;
- bake the texture of those small pieces in the bangs area, save it;
- duplicate uv_1, delete uv_0 and uv_1, rename UVMap to uv_0 and UVMap.001 to uv_1;
- join meshes, delete hat chops, duplicate, assign cut numbers, import in s4s;
- clone the hair with the bangs, export the texture, open it in the image editing software, copy-paste the baked image, delete everything but the bangs area, save, import in s4s