Hi Sul, I've also just started doing my first bits of solo Nav. I tend not to be to nervous above the actual navigation but more about the weather en route, if the cloud base is lowering and showers are starting to pop up, but I always feel proud of myself when I'm back on the ground.
I'm certainly not in a position to start giving advice but I always plan en-route diversions before departure, usually one from each turning point on my route. So if its necessary to divert, when I get to the next turning point, I already have a heading, time and frequency to the nearest diversion airfield. Never had to use this but it makes me feel safer, tuning the nearest VORs helps to. Good luck with your first solo land away.
The other day I was asked by Cranfield to report at Woburn Abbey and (some of you will take the p1ss here) it was only with the GPS that I found it! The place is just a big church; churches of various sizes are everywhere
I certainly won't be taking the p1ss, I train at Cranfield and it took me lots and lots of worburn circuit joins be be able to positively identify it each time. The usual reporting point is Woburn Town, which is at the end of the road leading up to the abbey. Its one of those that you can't see too well until your over it, so I usually reference to milton keynes when approaching Woburn, just to check.