If you have a tree to hang this from it would help. For the gypsy tent I was thinking yards of cloth (or a big sheet or two, like queen or king flat sheets) overlapped, folded over and pinned around a hula-hoop and staked out. Hang by 3 or 4 cords and then cover them with another piece of material to make a point and make a nice layering effect.
Use lots of colors and enough cloth to make the tent tall enough and wide enough to hold a couple of people with a round table and chair or two.
That is what I see when I think of a fortune teller's tent.