Well... First of all, I knowwhere you can upload art and receive constructive comments in return. They also have a WHOLE lot of events going, where you can participate and get feedback and exposure in return. That one isn't exclusively furry related, but still a very famous and widely known group.Then there are surely other groups on DA with a furry focus that host events from time to time. I however do not know them, so you'd probably have to do some digging there.Then I could imagine pages like FA or Inkbunny to have specific events as well.Usually those event involve a given setting and ask for your artistic interpretation. Think of that pear thing on April, 1st. You draw a pear, they put it on the front page. For a furry version of it, you probably have to look around furry groups and websites. But they are a benefit for you and the page: You get to practice drawing on something that might be outside your comfort zone, and get more widely known in return.