First of all, to DV!

I did a reality check in one dream, but for some reason it wasn't an actual reality check, I just thought it was and then determined that the dream was real.
This is a typical mistake. It's extremely important that you reality check in the right when you're awake. If you simply count your fingers once, get to 10 and then forget about it, well then of course the exact same thing will happen in your dreams!

When you perform a reality check you should always take your time. Don't just go through the body motion! Look around you and become aware of your surroundings. Where am I? Where was I 5 minutes ago? Does this scenario make sense? Who are these people around me? Should they be here? You want this to be a dream, you just have to find something out of the ordinary. Perform the reality check over and over again with full awareness. Expect the RC to go through! Imagine it working (because this is exactly what you want once you're in a dream).

This is a common mistake, but if you put more effort and awareness into your RCs, it'll pass on to your nightly adventures! As for the WILD part, I'm clueless, I've never been good at WILD myself.

Best of luck!