Congratulations! I wonder if everyone gets a dry mouth before first solo? That's certainly the only time I've really ever noticed it!
13 hours is pretty good, nay excellent going, you should be proud
Downwind (after checks of course) I had David Lee Roth's "Just Like Paradise" knocking around in my head. Go figure.
Getting out of the circuit on your own is fun. Did my first solo cross country last week. Amaaaaaaazing!
JR