Ok listen up, without the items required you cannot use any of the textures in the Art and Textures market.
What you need is one of these three...
128x128 texture item - 2,000tc in the toribash shop.
256x256 texture item - 10,000tc in the toribash shop.
512x512 texture item - 20,000tc in the toribash shop.
My textures are made in 128 and 512 resolution.