How I do it is after it has went into heavy trace in the mold, I use a wide, flat spatula and touch-n-tip it. This leaves little peaks in the top. I do that many, many times to the top. another method I've tried a few times is to use a wax paper on top and lightly tap it onto the top, then pull up on the 4 corners and it will leave a interesting textured top. There are ways to use chop sticks, combs, you name it!
ETA: I forgot to welcome you here to our little family soap forum

Glad you found us! 8)
Paul....

:wink: