You enter the front door of the Astral Gallery into a brilliantly decorated foyer. There's a large workshop here, with plenty of paper, canvas, pens, pencils, and paints in all types and colors. It's a nice place to just sit down and draw for hours. You could easily take a seat and do just that or you could explore the two halls to your left and right. The one on your left is labeled the Painting Wing, a marvelous rotunda of beautiful canvas. The one on your right is the Drawing Wing, a room filled with exquisitely framed drawings of all kinds.
You could also exit the building back to the main clearing.