I'll go with what has been depicted for thousands of years.
This is one of the first portraits - done for and by people of Jesus’ time
http://www.sodahead.com/united-states/is-this-the-true-image-of-jesus-christ/blog-238621/
These are some of the thousands of Iconic paintings done down the centuries -
an painting done in the 500’s
http://en.wikipedia.org/wiki/File:Spas_vsederzhitel_sinay.jpg
the Pentacrator compared to the Shroud
http://www.shroudofturin4journalists.com/pantocrator.htm
Below - the only pic I can find of the History Channels EAster special last year - using state of the art science, they created a 3-D image of the man in The Shroud. This is not the best photo - nor the finished one. If you watch the video, and see the results, and have a pulse - you will be astounded.
http://hypocriticalacclaim.files.wordpress.com/2010/03/faceofjesus2.jpg
All I've posted just scratches the surface. As a portrait artist, I have researched the ‘face of Jesus’ for decades...and painted my own versions.