Page 45 - Peter Randall "The Craft of the Knot.."

STEP 3 Pull on both standing ends, and take slack out with the running
ends as well.

Because of its symmetrical shape before it is tightened down, the
Carrick Bend is also tied for many decorative applications.

DOUBLE SHEET BEND

Another version of the Sheet Bend is the Double Sheet Bend, which you
may prefer for use with two ropes that come in different sizes, or if you
require a more secure bend.

STEP 1 Start by making a Sheet Bend (see further). Pass the running

end around the knot again to tuck under its standing part a second time,
making two wraps.