AI Image: Custom - prompts not copying/carrying over

I'm having the same problem and came on here to find advice! I started a course with flat, 2-D images, using the Vector Blues choice (sometimes legacy and sometimes non-legacy). I can't get any similar affect with any prompts I have tried with the new AI image generator. The characters and scenes look too AI, if that makes sense. Just now I kept trying to get the image flatter and the image generator kept making the female curvy, in tight jeans. So, the same problem with lack of variety in output but also not the similar tone carrying through that we had when we could choose a style. 

Does anyone have suggestions for image prompts that would produce a style like the new or old Vector Blues? I've tried the phrase Vector Blues, I've tried flat, 2-d, cartoony...I feel like I've tried everything and get the same style every time.