I don't think it could be a stand-alone "C". It'd have to have some kind of filled in surround or background.
You might just want to cover that with something professional and get your "C" somewhere else.
I could just be a difference in skin type, elasticity, etc. The darkness behind the lines might just be bruising, too. In any case it'll take 4-6 weeks for you to know what you've really got there.
Did the same artist do both?
I found the old thread from 2014 and was going to link it here but for some reason the photobucket pictures are now blurred out (by photobucket?), so no real point, I guess. Anyway I had about 25-30% of my whole back done in 4-5 x 30-40 minute sessions. Just lightened it enough to give the cover-up artist freedom to not make it an obvious cover-up.
With either of those pictures, the only way that circle is going to disappear is for the panda to be big enough for your old tattoo to fit entirely into the darkest area of the panda - and that'd be quite large and really weird overall placement.
Yeah, I've had scabbing like that. You'll be fine as long as you don't end up knocking or picking them off. Don't saturate the scabs with water or ointments.
Never seen that before. Personally I'd lay off lotions/ointments and let it dry out. Not much else you can do as long as it doesn't look/feel infected.