It's enough to see what's wrong...
When you import head structure to build pattern on it, you must do file -> import from dat -> project on XY plane (-z front) -> overwrite and import projection data. This last option creates a 3D frame on which you will add your pattern.
When you import head structure to build pattern on it, you must do file -> import from dat -> project on XY plane (-z front) -> overwrite and import projection data. This last option creates a 3D frame on which you will add your pattern.