The most important thing is that you had a good time and want to go again!

If you were cold while sleeping, the first thing to check is the amount of insulation provided by your sleeping pad. In cold weather you need more between you and the ground. It's a lot cheaper to replace an inadequate sleeping pad than a sleeping bag, so try a beefier pad on your next trip.

I've found (after a number of not-so-tasty camp meals) that it's a good idea to experiment with meals at home, first.