I've been trying to remember what I did to get it right. I am not a professional mechanic, so don't be afraid to correct me ...

* check #1 TDC on the crank by probing the #1 cylinder with a long screwdriver (don't rotate the engine with the screwdriver in the spark plug hole as you risk gouging or worse, breaking pieces off in your cylinder chamber -- it's probably safe if rotating with a wrench, but don't blame me if something goes wrong)
* work with the valve covers off so you can see which valves are open
* use only a wrench to rotate the engine to protect your parts and yourself
* take your time and wrap your brain around the process of how the cams and crank are synchronized, then it'll become clear how it should be

With that information, it's pretty easy to figure out if you're on the right revolutions from there. For example, you know when you're on #1 compression stroke when both valves are closed and you're at TDC. Then you can forward through the firing order and figure out where everything else should be when the cams and crank are set at the default marks.

Once you put the belt on, rotate it around a bunch of times by hand and follow the firing process in your head. If the firing order is 123456 (I don't think that's right for the VX), you should see compression stroke on #1 with both valves closed, then the same on #2 and so on ... simultaneously, the next upstroke on #1 should be exhaust ... you get it.

Save yourself some time and go buy a few of those metal office clips suggested in the service manual. They really help a TON. It would probably also be a lot easier with two people, but I did it myself.

When I put a new timing belt on my wife's Subaru, I actually started it up while the timing cover was still off to make sure I got it right. Don't run it more than a second or two as the engine will burn up without coolant around the cylinders and in the heads. The temperature gauge is useless without coolant, so don't rely on it