u will find a lot of curtain makers near dowl r/about down from souq waqif along the street heading back to the corniche. many of them have got a huge range of materials andother textiles. the ones i've been to, i havent seen green polkadots, but thats not to say u wont be able to get it. otherwise in the material souq, the street that the material souq is on runs parallel to the corniche and is behind the cultural centre, about 1/2 way along between souq waqif and dowl r/about. hope that makes sense .. i dont know the street names, only how to get there!!! sorry!