Updated the blog with some Red Skull photos, check it out @ dwkungfustar.blogspot.com
Great pics. Have you considered buying a Blacklight torch? They are really cheap. https://www.ebay.com/itm/9-LED-Ultr...4673914?pt=US_Flashlights&hash=item565ba42e7a
It works wonders with the Tesseract. Just take pics of the figure holding the cube with the torch off camera pointed at it.