My wallhangings range from 24x24 to 36x36 and two rectangles because there is a rectangle in the center; one has a whimsical cartoon of an old woman quilting and the other you see to the left here, purple, has a photo of a broken dish and a whole dish (you can read about what the symbolism is all about in the Pictures section where I share this project for victims of violence to look at during the medical-forensic exam). I had no pattern so tried to make it look balanced... nobody seemed to care about that though. Anyway, I make no particular size. It depends on the pattern I used or if I created it myself... sometimes I just can't stop adding borders!
They are hung a variety of ways by me and my receivers.
On walls, they are hanging on:
...decorative quilt or curtain rods,
...simple hidden curtain rods up against the wall,
...a wooden dowel is attached to the back of one for stability
...most easily, simply put up with clear push pins straight into the wall!
Other quilts I've made are on people's:
... beds or couches,
... quilt racks, and,
... in my beautiful wooden cabinet with etched glass all around and on the domed top that lifts up. That is actually at my mom's for awhile. We took out hand-crocheted blankets and added her wedding quilt and her mom-my grandma's beautiful hand-crocheted tablecloth. She proudly displays it in plain view to enjoy and share with her same-age friends.
You can do pretty much whatever you want to do... size and hanging. There is no rule and people will love it however you do it!
Cathy