To make spider mums use tip 233 and pipe it about the same as you did that one.
I like to start w/ 1/2 a marshmallow as the base. It makes a big spider mum
Pipe the strings all around the bottom; move up to the top of the marshmallow and pipe again, particially covering the previous ones. This should cover the MM completely except for a hole at the top. Here you pipe one set of standup strings by holding the tip & bag straight up & down; make a quick squeeze and let up as you pull your hand straight up and away.