If you can't do it yourself, you might want to have it done at the Honda dealer because it's easy for a mechanic without experience on it to get it wrong, being such a precise adjustment.
The first time I did it on my 1985 Corolla, I got it wrong and the engine sounded like a sewing machine. I got it right the second time, and now, I'm an expert on it. My engine needs to be hot during valve adjustment, which makes it harder. I then need to set it to TDC, adjust four valves, set it to BDC, adjust the remaining four. I have a nice metric feeler gauge. You need to make sure that the gauge is tight between the valve and rocker, tighten the lock nut without changing the adjustment, and then recheck to make sure its correct. Use the correct-size gauges. When it's done, it's another challenge to ensure the valve-cover gasket, semicircular plug, and RTV silicone in the little sharp-edged gap areas are all installed correctly. Of course, then, I have to reinstall the air cleaner.
Also note that light, barely audible valve ticking in adjustable valves is not only normal but also necessary for proper operation and longevity.