There are thousands upon thousands of comics here on Tapas. Even if they rotated the staff pick list every day, they still wouldn't be able to feature everyone. As such, they're understandably picky about what goes up there.
In general, the comics I see them choose tend to have at least a high-intermediate level of both art and writing. They do also prefer the vertical format, though they seem less fickle about that than WEBTOON does. I got featured on 'New From the Community' this week, and my comic is in page format here. (That said, I'm unsure whether that section is a pure algorithm pick, or whether the staff have a hand in selecting them.) Yours is vertical, so you don't have to worry about format.
Your art is cute, colourful and eye-catching, and I think you're on the right track in that regard! Keep working on things such as dynamic camera angles along with anatomy/figure drawing, and I think you'll be able to push it to the point where it'd be very competitive for a staff pick. (Your sense of colour is already gorgeous, that's definitely your strength!)
Something I would suggest if being featured is an ambition you hold is, after a few months of really focused practice on the things I pointed out, to go back and update your first episode with shiny new art. It'll be the first thing staff and potential readers see, so it's worth the time to do!
But, in all honesty, pinning too many high expectations to a webcomic project, especially if it's one of your first, is not the healthiest way to think about it. Having ambition is great! I certainly do with mine. I have subscriber targets, and I'm really hoping for some solid audience growth over the 3-to-5-ish years my series will run for. But my main focus with it is on how I'm using it to improve as an artist. That way, even if it doesn't take off, and I miss every target I set, I've still got a lot of growth out of it, along with solid portfolio pieces, and the experience I need to make my next project bigger and better.
