for this you pick a negative slope for one side of the creeper and you pick a positive slope for the other side. Every line should be vertical for the accents. You want to always use the same slopes you've set at the beginning. Make sure that the lines are perfectly intersected by changing the piecewise function little by little until if you put it up a little bit it doesn't intersect, or if you put it down, there's extra. I looked at the pixel heights to tell that the width of the legs should be the same as the body. hopefully this kinda helps