Picture posting is enabled for all :)
And you don't change the border soil?
But all my bags are slit across the width and folded in half. like saddle bags. They stand upright and will even hold a bamboo cane upright too.
I usually grow 3 per bag, in bottomless pots, the pot does give extra compost. When I pot on from 31/2" pots I use a double pot - I pot into a bottomless pot which is sitting in a pot with a bottom. Then it can be put into the growbag when space allows.