Character mistake: At the start of the episode when Clay is done brushing his teeth and standing in front of the mirror without a shirt, he has no tattoos. He has been seen several times with tattoos on his arms that are not even covered by a normal T-shirt. (00:05:02 - 00:05:23)
The Cost of Doing Business - S1-E22
Character mistake: After they kill their target the dead body above the target moves and looks up and then back down. (00:17:43)
Answer: Depending on caliber the body does spray blood from .308 and up.