I can't imagine this hasn't been requested already but I'm not seeing it in my search thus far. There needs to be a way to select or upload a thumbnail for clips before sending it out to be posted all over. So many times I work on a clip and then find that the service it posted to picked a random frame of our host with his eyes half closed and mouth agape looking stupid, and it's been that way for days. Please let us upload a thumbnail to be used!