Covers. If your cover is bad, no one is going to click and read it. So it suggest using apps like PicsArt for your cover editing. There's tons of tutorials and things to watch if you're feeling stuck. Especially if you are a new user to that app. I don't really recommend buying the PicsArt gold or whatever the name of the subscription is called. I've managed to use the app fine without having to pay for it so far.

Now to make your photos more aesthetic I recommend these:
•Graining your image: (on PicsArt it's called "noise")

Heartthrob edit: (use a sparkly image or one reflecting some light. This will enhance the look better. I use Prequel, click on the image at the top, select your image, press effects, go to Retro, scroll for Disco. You have about 9 options, pick one (I recommend 1, 2 or 9). Tap the chosen filter again to change the settings of it. There you go, a heartthrob edit!

I'd use this filter for baddie related covers mostly.

Plain old VSCO filters: (There's a bunch of accounts on Instagram that provide filter codes. Some being - vscofillterss & lovfilters just to Name a few. (Original on the left)

filter credits: lovfilters

Putting zooms in and stickers(can be done on PicsArt):

I did a tutorial but realised I can't upload it here. So like I'll find a way if anyone is interested.

But those were some different ways to make you covers more aesthetic :)