The first photo is the same as the one of the video screenshot I posted, but with better definition, that's all.
Vanezis was correct, no matter how many times the campaign team, Bill Robertson or Roch obfuscate the issue. They are dried up remains of two blood streams from Sheila Caffell's neck wounds, which have been partially brushed away; by the perp when staging her suicide, or by Ron Cook when moving her hand for PC Bird to photograph, or by the firearms officer to make safe the rifle. And as I said before, there also appear to have been two blobs of dried blood at the end of those streams which have been rubbed/knocked off at the same time, leaving crescent-shaped remnants.
The second picture isn't clear enough to be certain of exactly what it is - cut, graze or smear. But it seems they're up to the same trick that David Bain supporters tried on with the indents on Robin Bain's thumb resulting from loading bullets into the rifle magazine.