When threading a bead onto a hook, thread the bead over the hook point remembering the smaller hole goes on first. The larger recess will be to the rear.
Securing the bead at the hook eye makes the fly sink head first but when positioned at the centre of the shank the pattern sinks on more of an even keel. The latter is preferred when tying the FlexiWorm.
A thicker thread or floss is preferred when tying this fly because fewer thread turns are required to build up the body. Use a wide bore bobbin holder (especially with floss). A bobbin prevents fingers from damaging the thread.
Make sure all four strands of legs are the same length and of a decent length to create the required movement. If the legs are too long, trim with scissors but don’t stretch the strands as they’re cut.
The sky is the limit regarding colour choice but great spring options other than pink include olive, red and yellow. Experiment with different colours to see which catch most.