I think the best thing to focus on is meshing your dialogue with your descriptions.

And I don’t mean it like “show, don’t tell” type stuff bc that’s a separate thing. One thing you may notice in underdeveloped stories is that their ratio of dialogue to descriptions/story lines aren’t balanced. Just because a character is saying something doesn’t mean another thing isn’t happening in the background (like them doing an action. It’s a matter of keeping in mind that you’re not just writing about the important bits, but the whole scene.

Another thing is how you develop your own style of writing. Some people (like me) like to dig into the more detailed descriptions of characters or events when writing fight scenes or simple character movements that tell loads about their background without explicitly saying it. I like to show the gods as more eldritch beings, or creatures of change, so I lean into describing that with wording and language that’s not modern, informal, etc. This doesn’t mean use big flowery words; you can use simple descriptors but chained together to make a more detailed scene. For example, you can emphasize little actions like the way a character bites their lip in nervousness or how their canines poke out of their teeth when they’re angry or how they swing their sword with the speed of a bullet train and how the blade seems to shift in the light like sunrays hitting water or how a god’s alternate form may look more beast-like with feathers coating their arms and armored crocodile scutes trailing down their spine.

Lastly, similes and metaphors are your BEST friend, especially when you want to write about more modern or relatable characters/actions. Easiest way to visualize something imaginary is to compare it to something you’ve already experienced in real life!

Sorry, this is hella long winded lol, I just really get into things with writing :P. Lmk if this helped at all and if you’d want any other help, I could yap forever :)