The AI generated images were excellent. I love that the cost of such concept images has come way, way down.
It'll take a while for people to get used to considering graphic generation as more than mere visual placeholders, I suppose. Early days.
Sometimes, adding one extra word to the prompt (even though it doesn't describe the style) will change the whole visual style or change the thing you're trying to highlight.
It was my first time with Midjourney, I'm sure there are tricks to improve on that. Might revisit the images, I do agree that the styling inconsistencies don't look too good.
Good luck!
Still not fully satisfied but good enough.