A YCH auction could be fun if you have a pose or two in mind, or characters to involve ^.^ & an art raffle would help with visibility!
Maybe opening some 'Wing-it' commission slots to put your own spin on others' characters would be fun?

How does an art raffle work?

Here's a link to one in progress.

You decide on what to offer as a prize, how long it will run, and what participants will need to do in order to enter for a chance to win it, such as becoming watchers of your profile, adding the post to their favorites, creating a journal entry with a link to the raffle and/or your profile, etc.
Pretty much just making the raffle as visible as possible!

It's good to have conditions too, such as what you will/will not draw, if entrants will need to already have a reference sheet, and to overall be clear about what you'll draw for the winner.

It's also good to make regular reminder posts about it which are usually just the same image & a link to the raffle, so that those just browsing all images have a better chance to see it, follow the link, and enter. Furaffinity only allows a user to post up to 3 of these reminders per day.

Then at the end, roll a random number generator to pick the winner, announce the result, and connect with the winner!

If someone notices that I missed mentioning something important, please add your advice too!