For the band type Layered and Blending, try beginning and ending blend values that are between 2 and 6 apart. For Big and Blending, try values that are between 0.5 and 2 apart, with either a low or high number of blank lines. For weird 3D-looking tubes, try 10 to 12, no lines, and Empty space 1. Big and bold doesn't use the blend values.
If you don't want a frame, set Frame size and Border size to zero.
After opening, press 2 - 5 for various sizes. 5 will produce 3100 x 1550 pixels for 2:1 aspect; 2500 x 1875 pixels for 4:3; 2200 x 2200 pixels for 1:1.