I think you need to mabey have a rough script, not just the topic to cover but roughly what your going to say too, then practice, also I quite enjoyed your approch to the kit, it's true enough things don't work first time, but if your presenting an instructional video, i think a bit more thought into the selection of materials used, Your camera work might flow better if you use single shots then edit them together, if you take the bit where you explain how to chop by holding the axe against the wood, instead of zooming out with the remote, try to get to a point,cut, close shot,cut, wide shot.plan these into your script.work on your to camera confidence, your talking to me the viewer so look me in the eyes if you get what i mean. good stuff though.