Printing Images

Fractal Monster has some terrific images on DeviantArt. One example:
https://fractalmonster.deviantart.com/art/Deep-Left-in-Seahorse-Worm2-426665642
He kindly provided the parameters.

I thought I would try this really deep zoom in UF6 and then try to print it.
I suspect I made more than one mistake in the process.
I turned it into a large (14 x 10 inch image at 360 ppi for an Epson 3800 printer). Searching the forum I see Velvet Glove says work at really small dimensions and then render larger for prints. First mistake! Yes it took ages if I moved something.
I thought my render would give me what I saw on screen but it actually produced an image with what I wanted as my central point in the top left corner.
Can anyone please explain how I can ensure that the render produces an image that covers exactly the same area as what I am seeing on screen.
It was a little disappointing after the render took about 90 minutes although the quality was excellent.
Many thanks
Peter

Sorry to hear of your disappointment, Peter. The only explanation I can think of that perhaps you had "Split into tiles" selected on the Render dialog. This might, for instance, calculate just one quarter or a part of the image, perhaps giving the result you describe. Did your final rendered image have a letter+number after the filename at all? That's how UF labels these part images (if so then look around for the other parts!). "Render portion" is another setting that might do something unexpected.

If this is not the case then I don't know what happened, sorry.