I'm not entirely sure what a "beat tape" or what the aim for one is, but I can still lend some ideas. Maybe fill me in about beat tapes?
For the video itsself, I definately suggest you have more stuff going on to make it more interesting visually. At the least, add more pics... maybe some of your equipment, some screenshots of your FLP's etc. Sexy ladies always get views too, just make sure to be classy and original if you add some in; they are particularly useful as thumbnails. If you want it to look more professional as well, make yourself a nice, simple logo and have a custom intro and outro for your videos.
As far as promotion goes, how are you promoting now? and what do you want (specifically) out of promotion?