I noticed that the {picsize} and {picres} variable uses the letter "x" as a separator, for example: 682 x 155 x 24.
I'd suggest using the multiplication sign "×" instead ,like 682 × 155 × 24— it would look nicer. Just a small suggestion. 
You could roll your own dimensions:
<b>Dimensions:</b>\ {=picwidth + " × " + picheight + " × " + picdepth=}
Maybe it's a good idea, but I still feel it's because DO's own way of expressing it isn't quite standard.