One more thing I forgot. I've learned that it's good to get a couple of combs set up in frames and in the box before you get into the brood nest, that way, if the first brood comb you pull out has the queen on it, you can coax her onto one of the frames in the box so you know you've got her.
I did one once where I started pulling out comb, setting them aside, then I got out the first brood comb and there was the queen. I knew I'd have to do some cutting to get the comb to fit in a frame, and I didn't have a helper, so I herded her back to the next comb still in the wall. Then after I got that brood comb in a frame and in the box, I cut out the next frame and didn't find her, then the next frame and still no queen. Then I started to get into some comb loaded with honey and it dripped all over everything, covering bees in a big mess. I thought sure I'd messed up letting her go back in. I did eventually get her, but from then on, I always keep a cage handy, but I'd rather just set up a couple of frames and put her on those. I figure it helps get more bees in the box quicker too. Good Luck.