Create Civil 3D surface from countor or polylines

Hello,
I need a person who show me in teamviewer or zoom (or similar) how to do the next things.


• Create surface (from contours or lines) in my Civil 3D, when I do it in my prospector it says opposite corner not found, for sure im doing something wrong
• I already got how to put those lines with my TIFF (aerial image) in the same file with the current location (3116 its my coordinate system) but when im putting them in the object viewer it only shows the 3D lines BUT NOT the aerial image also, how can I merge those 2 layers, files or whatever is the name.
• Show me how to put the dwg (autocad plant desing) together with my previous file where is the aerial image + the topograpgy

Here I attach the files so you can try it before, when you are ready you can tell me and we do the teamviewer meeting to see how to do it

Thanks,

Jaime