Please check my check list- Mating/Installing motor and trans

I'm a bit more concerned about getting the mounts in right.
Do I mate both halves of each mount together, then bolt to motor, then to cross-member?
Or, Lower half of mount to cross-member, upper half to motor, then mate the two halves?
Do I leave everything loose until the trans is bolted up?
Loose until the trans is bolted to its cross member?
Clarification on procedure order would be very helpful.
Also, which mount goes on what side? does the one that jogs a little go on the driver or passenger side?

-Thanks again