OK – thanks.
It does however sound as if it is not something which can be sold or communicated commercially because with the restrictions you describe it sounds like something which one have to do very carefully and when consumers try it it is highly likely something goes wrong and leads to complaints due to damages to the print or garment.
I do not think it is not possible to tell customers to use baking paper or likewise when ironing clothes.

I may misunderstand your feedback but unless it is possible to tell consumers ironing is possible (without other restrictions than the restrictions for the garment) it is not an option in my perspective.