"good luck I'll be in the tower if you need me". With those words I set out on my first overland navigation, and second solo flight. I was quite nervous because I had expected my instructor to go with me on the flight.
But figuring that if he thought I was ready for it, I must be ready. So there I went, alone. everything seem to go really well. After around 75 min or so I was back at the field thinking I did pretty good on my own.
Later I realised i made a couple really stuppid mistakes
I checked the GPS recording I made of the flight and found out that the bridge over a river that I had used as navigation checkpoint was a totally different bridge than the one I used during the flight.... I was around 10NM off without knowing it
I used ground wind to calculate wind corrections at 2500ft
I did not check my heading indicator against the compass during the flight.