I'd practice hovering, once you're comfortable with that you can pretty much land in any position.
Practicing approach prior to hovering stop is also important. I find that it's easier for me to approach with nose-tail trim, but once you're comfortable with hovering stop it doesn't matter that much. As frostycab said when you land from hovering ground effect at 10ft and lower will push your aircraft upward and this needs extra nudge on the collective to counter that, if you land at higher speed ~30 you might not experience this. Don't let FPM drop too much or you'll lose control, try to decend slowly within a few hundred FPM. When you make corrections with the stick just nudge and let off and repeat, don’t keep continuous pressure on the stick. Same thing with rudder, this can help stabilize the aircraft quickly.
Setting on your gear is also important, took me a while to find comfortable spring tensions/curves/deadzones on my rudder and joystick. I find that trimming too much will mess me up, so once I hover I don't trim.
This guy has some nice tutorials on the Apache. I'm definitely not at his level in terms of smoothness but I'm getting there.
DCS World | AH-64D | Hovering Practice Part 2 | Tire Box | Turns Around a Tire - YouTube
