These are the things I find helps rank my youtube videos I have few top spots and loads on page one so must be doing something right ... although remember keep testing and tweeking as Google seems to change these reguarly ... but here goes
Find what keywords phrase etc you want to rank for ... then shoot your video ... if you are speaking on it remember to say the keywords at the beginning and again through the video ... save the file and name it with your keywords. Then apply keywords to the title description, and tags. If you are able add annotions and a link to another one of your videos ... also make sure you state for people to like and comment on your video plus subscribe to your channel ...
adding a transcription may help too this needs to word for word what is in the video ...including of course your keywords... let me know how you get on .... go get 'em