Technical advice for a young hurdler?

To help with video set up for 110m, using a bleacher if possible, around Hurdle 6. The zoom should be good enough for most of the race without zooming out. If no bleachers, then zoom the camera all the way in and walk back until you are a reasonable size on the screen. I would set up at hurdle 6. That would help with your analysis.

I think Your take off trunk position is good. But you delay your lead arm position until after flight.
http://www.youtube.com/watch?v=1vf64w4p0k0

This video has nice side camera action.

It looks like the delay in the lead arm position is causing you to bend forward on touchdown instead of being tall. Tall at take off, tall at touch down.

For training, Ange’s advice to me has worked incredibly well. For 14.1, you would need to run splits of around 1.1 per touchdown interval. Set up training distances to mimic this rhythm. For my sub 14 hurdler, its 9 yard spacing in spikes, or 8.5 yards in hallway in flats when weather is poor. Indoors we worked mainly through 4 hurdles in training, now working to 6 hurdles at race rhythm.