Stacking is crazy!

Hey Carl - cool you're having a crack at this too, will be interested to see how you get on and if you like the results!

Easy to open in a stack - here's how:

In Photopshop select File/Scripts/Load files into stack... then locate your 11 jpegs, select then click 'OK' - Photoshop will open them all up.  Then remember to select all layers and select: Edit/Auto align layers... and click 'OK' before tweaking the layer opacity as per the summary.

Hope that helps!

Enjoy - and would love to hear how it goes