Hm abstract banners are quite hard to make! I've been trying to make one but when a sig with a render the focal is on the render. If u don't have a render you have to create a focal! Second one is too messy! Hm try to smudge with the brush circle 19 (not fuzzy circle) and creat some pastel rainbow colours

Last one bg is kinda empty, try to fill it more and mixing it with the render. Also gold goes ok with black but even better if it had a glow


Don't put text on an abstract banner! It's not really necessary! On the third one it says' faster thabn lighting' but sig is pretty still you knwo there's no action in it. Perhaps start there