How should i create top and bottom sides? Add rolled up texture or do it with mesh?
It depends on the level of detail you wish to accomplish. If it is a minor prop for a game a texture map on a cilider will do just fine. Otherwise I would sculpt the general form the bandage starting with a cilinder and multires. Then do a Uv unwrap and create pattern on the side by applying a displacement map and the top by sculpting using a texture. When finished a normal map can be generated if disired