I've been tracking Comet Pons-Brooks and watching all your posts with interest. On the 10th of April, I noticed it would be located right between Jupiter and the young crescent Moon, so this would be a good occasion to try to locate it.
After getting caught in traffic, my husband & I changed our location plans and headed up to Mt Gravatt Lookout (Brisbane, Australia).
It turns out that despite the glow from the city to the North, this was a good decision, as I managed to find a nice spot to set up where both the Moon and Jupiter were visible between the foreground trees:
On the way home after moon-set, we came across an injured ringtail possum that we took to the vet, so I didn't even check my files until the following morning.
The following morning I had only a quick look, and went to work feeling like yesterday's time was wasted - that I'd had no luck at all in finding the comet. (and the possum didn't survive, so I thought bad luck all around.)
I knew it would be bloody hard to see it in all this twilight glow, but I thought I had a chance knowing its location...
...then some time during the work day, it dawned on me that the comet may be hiding somewhere in the RAW data. And if I thought of it like astrophotography, stacking the RAW images might help to bring it out!
I normally do wildlife photography not landscapes or wide field like this, so normally when I think stacking, I think imaging through the telescope, I hadn't actually done it with camera files before. Stacking for panoramas, yes, but not for finding faint comets... 
Anyway, after some googling for how-tos, and wrestling with Photoshop's layer alignment, it worked! There was the faint fuzzy comet - and Uranus, and several background stars of Aries:
