Drawing for Sculpture

I spent ages last week working on this drawing, which is part of a sculpture to be shown at Swell Sculpture Festival later this year. I wanted to make a life size male figure in Marine Ply, to compliment the other elements within the sculpture. I drew this free hand but it is loosely based on a Perugino painting from 1500/05 (see below). The Christ figure is standing in a beautifully casual contrapposto and seems to almost be painted using a female model. I have read that it was common to use a male model to paint the female form, but I hadn't heard of the inverse happening. 
I did make a few adjustments to the posture but basically followed Perugino's pose. 
Later I drew grid lines to more easily scale it up to the full size version, which I have since managed to  cut-out with a jig-saw in 12mm marine ply. 

Perugino (Pietro di Cristoforo Vannucci) Italian, 1445/46-1523 The Baptism of Christ, 1500/05 Tempera on panel, transferred to canvas 27.3 x 46.4 cm (10 3/4 x 18 1/4 in.) Mr. and Mrs. Martin A. Ryerson Collection - Art Institute Chicago

http://www.artic.edu/aic/collections/artwork/16197
http://www.swellsculpture.com.au