Maybe other newbies have asked, like me who haven’t an enlarger, darkroom, computer, printer, etc. (an iPad, yes)(I don’t even own my own cellphone, have never owned one).
Yes, I‘d like to pay a lab-person-member to enlarge negatives (various size, MF) to perhaps 4x5. Or maybe larger. Brief googling shows various means to the process, I can‘t diy, but I can’t quite find a photo lab online stating the service. I’m in south Florida, but can mail negs anywhere. For cyanotypes. Aside making nicer bigger prints, kids are now asking for stuff on t-shirts; small won’t cut it.