In my experience image models are very "thirsty" and can often learn the overall style of an image from far fewer models. Even Qwen is a HUGE model relatively speaking.
Interestingly enough, the model could NOT learn how to reliably generate trees or water no matter how much data and/or strategies I threw at it...
This to me is the big failure mode of fine-tuning - it's practically impossible to understand what will work well and what won't and why