Not bad, but much easier than it appeared at first glance.
I started entering from B to the end with maybe half a dozen blanks.
Perhaps the crosses were too obvious. Simple logic as to where they would fit.
@Aristo - liked those too & D2, F1, K1, O2, Q.
F & O have this undercurrent which finally broke in Colorado, but this is almost 2 years old.
Canada, meh.
@Mattrom - V & W were a problem for me too.
Better tend to that grass, eh? Plays havoc with good intentions.
(-;
Ironically, last one in was A ! What this puzzle is all about. Duh.