As someone mentioned earlier, I would stretch a rope/string between two stakes on either end. Instead of painting the ground, I would just dig 4-6" left or right of the rope and keep about the same distance.
Hopefully this is obvious, but dig in the same direction as the FEL is pointed.
Line the machine up on the line and put it in neutral and lower the stabilizers. As was mentioned earlier, take long shallow bites rather than short deep ones.
When you get to close to the machine, point the teeth straight down close to the machine and lift the stabilizers. Extend the forearm of the backhoe (push right hand away from you) while using your left arm to control the height of the main arm. You want the teeth to dig in enough to push the machine forward, but not too much to lift the machine. No big deal if you do lift it, but it is less of a ride if you don't.
As you are pushing yourself forward with the backhoe, you can reach around to steer the front wheels if you start getting off track.
After you learn how to move the machine around with the backhoe, you'll wonder how you ever got by without doing it. This process can also work when you are trying to move the machine left or right.
Good luck
Paul