The document below covers the process for preparing a topo overlay to be used as a layer in a digital geological map.
Video tutorials (screencasts)
The following screencasts document the same process:
1) In this video above I describe how to adjust the data frame. I also show how to use the shapefile (or feature class) method for data frame clipping.
httpv://youtu.be/Zv0nPHBTFSc
2) In this video I describe the alternate graphics object method for data frame clipping.
httpv://youtu.be/uvtSRDz8dYM
3) In this video I describe how to prepare, export and check your map.
httpv://youtu.be/hm6Jugsrti0
See also: digitising a hand drawn geological map in inkscape.