If you edit the uv
You may display an image in a specific area of a model
Steps:
this is what happens when you do not set the UV coordinates
1=(2 clicks) open the properties window of the model
2= Select UV
1= (2 clicks) open the properties window of the material
2= Select maps
3= In the file diffuse you can add one texture
4= In this part you can edit the coordinates
5= Image preview of polygons and texture
This is the same process that was applied to texture these gundams