In short: blogging about @splinterlands here on Hive
... of course, they need to be proper (effort put into them) posts, and @monster-curator will come check you out.

There's also a weekly #BattleChallenge from @splinterlands themselves. There IS a theme every week, but I haven't actually had any of the cards from the theme to participate in that one yet
p.s. You don't HAVE to use the card in the theme every week (if you don't have it)... but that just feels lame, so I'm waiting for a theme where I actually have the card to participate in that one.

Lastly, try curation: Head on over to @hive-engine (https://hive-engine.com/), Buy some SPT, stake it and start curating (the ever increasing) number of #SPT posts.