Everyone has their own way, but things to remember would be.
- I always use an actual base gasket that's made for the cylinder, particular for timing. If it's stock timing, I use 'stock' gasket'
- I sand down top of cylinder and bottom of head, so they are exactly flat, then I use only red RTV, liberally, leaving enough space so when it's compressed, it won't go into the cylinder. I apply it evenly and let it sit for about one minute, then put the two pieces together, torque it down all the way, but not tightly (don't want it all to squeeze out). But the amount that does squeeze out is good, because it provides further insurance from leaks.
- Copper head gaskets are good because they squish, but again RTV is fine too.
- I use red RTV for the intake gasket.
The most important thing when using RTV is make sure you get the right heat resistance.