I think
Damian is still producing his manipulations - at any rate he announced a new series recently.
http://www.cruxforums.com/xf/threads/damians-publications-on-dofantasy-com.4983/post-422049
Thanks for taking up my suggestion of this background, Hammers.
You have turned it into another ambitious, multi-figure composition, and it certainly looks like a hard working day for the executioners, as your title indicates!
The Via Appia theme is interpreted convincingly, with four crucified figures lining the road.
I think a fifth one is about to join them, judging by the group you have cleverly inserted in the foreground.
The action is nicely blended with Poussin's existing figure, and the original, seated figure in the shade of the tree has been deleted very neatly.
Your modifications to the right hand crux figure, following Tree's advice, are very successful, and this figure is arguably the best one in the scene, in terms of scale, lighting and contrast.
The other figures present a good handling of scale, receding into the distance - perhaps the central figure is slightly large, and could be flipped horizontally to correct the lighting direction.
All of the inserted figures, except the right hand one, have higher contrast than the background painting (which admittedly has low contrast.) Lower contrast in the new components would provide better blending in this case. Alternatively, the background could be given higher contrast?
Meanwhile, this is a good result in 'Paint' and considering its limitations, I think you have done very well.