I will be selling my art as digital prints. I will therefore need my prints be be jpegs to send out to buyers in various sizes so that they can print them off themselves.

Please can you tell me how to resize my prints, as I'm doing my head in trying to work it out.

what i have been doing is I go to 'resize painting' and go to the 'print size' section where i then try to input my desired print size, i'e 50x70 cm in 300dpi. I chose this size before i start painting so that when it is to be printed off, the quality is best and printing off prints smaller than this will not lose quality. Whereas if i saved the size as a smaller size to start, then if i needed to upsize, i'd lose the quality. This is my thinking. Am i correct?

Anyway, whenever i try to change the print size and save it, it saves to a different figure than i'd inputted. Why does it do this? If a client wants a print in size 50cm x 70cm to send to a print shop but the Artrage automatically resizes it for me, will this matter?

I don't understand.
Ill be selling my prints in various sizes and need these sizes to be available to send out to my buyers in zip file format as a jpeg. (which i understand how to do - export file etc).

I hope that makes sense and i realllllly hope somebody can enlighten me.

Thanks in advance
Dawn