Doing great Catrin!

One tip on the video ... I don't have the expertise to comment either, but it was hard to see much from the angles in the clip you posted. The way they do it in the ChiRunning workshops is in a circle with the videographer in the center. Start with your back to them and run the radius so they record you straight on from the rear, which will show your hip stability - turn and run the circle while they pivot in place and record you from the side, which will show your posture, foot strike and hip rotation - then turn and run towards them while they record you from the front, which will show your arm swing and shoulder stability.