I struggled at first, if coming out of the valve it will actually highly likely be coming under the tape somewhere into the cavity, then out the valve. I used gorilla tape and had to re tape a few times, I had wide tape I could make the width needed, I tried twice with it in the grove just covering the spoke holes, when that failed (twice) went wider. It ended up wide enough so when first applied it covered the width of the rim, when I pressed it down after it kinda sinks into the middle a bit but not fully.
Had to go wider than I have on any rim in the past. My front is taped as above and holds pressure well, upto 90psi. The rear (using slightly thinner tape) I need to redo sometime as above 60 it loses pressure gradually.
To me the spoke access holes look too big as your tyre ends up partly sitting on the tape. Unless i’m doing it wrong