Using a grub hook (The example is a Hanak 310 heavy buzzer hook) start the thread at the back of hook.
Prepare a mix of layered marabou in a clamp.
Make a dubbing loop from the thread, insert dubbing spinner, then add the marabou to the brush and spin
Wind your thread forward about a third of the way, wind the dubbing brush up to this point, folding the fibres back with each turn.
Make sure the marabou is dense and the winds are close together
Repeat for next third, and again to just behind the eye.
Secure brush with a whip and trim off excess brush
Do some basic trimming of the marabou
And some more until it looks like this
Tie on a pair of plastic eyes
Give the marabou a good scrubbing and trim again.
Don't trim too neatly
You can experiment with different eyes
Perhaps even booby eyes on a light hook.
An alternative, is to build the body with smaller single colour brushes, using one colour then the next to achieve a mix.
You will then end up with stacked layers like this