I have a feeling if one of the experienced painters did one, and you did one, using the same equipment and paint, the true painters body might look a bit better.
Do you have an airbrush? Not that you NEED one for this particular scheme but imagine if there were shading and out lines to make it pop more? it would look better and would still stick to the original scheme for the most part.

Matt, by no means am I trying to dis you, I just think Casketman might have been talking to the painters here, not us average joes.