Using Sheldon Brown's tutorial, I believe I 3-cross laced this front wheel correctly.
Then, I gradually ran the nipples in until the bottom of the nipple reached the bottom of the spoke threads.

Now, though, the trailing spokes on the left side (exiting inside the flange) are very tight, and the leading spokes (exiting outside the flange) are very, very loose.

Conversely, on the right side, the leading spokes (exiting outside the flange) are very tight, while the trailing spokes (exiting inside the flange) are very, very loose.

The wheel is pretty round, and true, but is off-center to the right about 1/4".

My guess is that I went wrong somewhere...so says Captain Obvious!