This is my first time using Blender and then im trying to make a low poly girl model. After its done, i try to unwrap the model with smart uv project, then go to the texture painting. But the thing is, the paint is only working on the body. And i notice the UV Map is not complete as the UV Map when im unwrapping it. Any help?? (Sorry for the bad English)
If you choose Texture Slots > Mode > Single Images instead of Material, make sure that you've selected the good texture (which is supposed to be Sepatu and not Badan if I judge by the image texture used by your material). Also select the object on which you want to paint (you can't paint on several objects at once). At last you need to make sure that the normals are correctly flipped, select all the objects, switch to Edit mode, select all the vertices and recalculate the normals (ShiftN).