Part of brush calligraphy's beauty is how the paper continues to absorb the ink even after the brush has moved on. "Shhh," said one of my teachers, "Ink is working."
To let your paper and ink accommodate the ink's flow, lay it over a sheet or two of used paper, and then on a mat of felt or a thin bamboo placemat. This lets the air circulate and keeps the ink from puddling on the hard surface.
See the photo for the post below on February 11.
Remember to let the paper and ink thoroughly dry before you hang it up - or else the wet ink will run down the page.