Add a lead wire underbody because even when wet, a rabbit fur strip has a parachute effect so extra weight helps it sink.
When trimming materials such as Lite-Brite for a tail, use your finger and thumb as opposed to scissors, because you want a natural-looking cut to appeal to the fish, not a sharp edge.
There are many shades of pearl Lite-Brite but when tying perch imitations, green is best. All shades produce that incredible sparkle that looks so fishlike to a hungry trout. Try plain or blue for roach fry patterns.
Achieve a slim fish shape when dubbing the Lite-Brite body by twisting the rope so that it forms a thick rope. Twist front to a point before winding onto the shank in touching turns.
Rabbit fur is fairly long so it suits large patterns of more than two inches for example. For smaller fry patterns try mink strip or pine squirrel.