Add Pass to Standard Shader

Hi all,
I have been able to combine the Curved World Asset with ASE and get it to work. However, I need the Curved World vertex offset to apply after the surface shading occurs.I believe I need to add a new Pass to the Shader for this; and to make sure that I can still edit in ASE; this should be done using a template.
I'm curious to confirm this is the right approach, and if anyone has done something similar - or can give me a rough guide as to what I need to do to pull this together.
I have been able to combine the Curved World Asset with ASE and get it to work. However, I need the Curved World vertex offset to apply after the surface shading occurs.I believe I need to add a new Pass to the Shader for this; and to make sure that I can still edit in ASE; this should be done using a template.
I'm curious to confirm this is the right approach, and if anyone has done something similar - or can give me a rough guide as to what I need to do to pull this together.