There are websites that allow you to meet other artists specifically and offer functionality for actually sharing your art in a gallery format. You can then comment on each other's work and have a proper conversation about it. Like I said, my hand is going to be forced in using it for promotional purposes, but what I can actually do on Twitter itself is basically limited to linking the video (without an embed feature... in 2016) and talking about it in 140 character strings of text.
Once again I'll say it, Twitter is not the best at doing anything, it just got popular and now gets used.