schematics checklist
for creating the schematic u can use cadence capture.
there will be learning capature in the help, many point are give which will make clear how to give net alias and place off-page connector etc...
there are many other rules to be followed while making schematic entry, u have to think from the layout view. e.g all the components in one section must be shown near that section which will make the layout person to identify..etc.
while creating symbols, there are two types one is split parts and the other one is single symbole, you must also see if there is any thermal pad given and connected to gronund than it must be assigned as an extra pin & must match with the footprint. You must also follow some standard naming conventions.