Continuity mistake: When the woman is collecting the clothing at the Hi-Lo Mart, the position of the shoes she is carrying changes between shots. In the first shot the toes of the shoe are pointed at the ground, In the second they are aimed up over her shoulder. (00:03:00)
Continuity mistake: Just before Lucy finds Walt, the items she has gathered swap from her left arm to her right. (00:03:20)
Continuity mistake: The name tag for the shop worker swaps sides while she is walking through the Hi-Lo Mart. (00:03:20)
Continuity mistake: When Skyler and Walt are reunited in the hospital, Skyler is holding Walts hand up by his face. As the camera changes angle however, their hands are much lower. (00:05:20)
Continuity mistake: Jesse takes the mask off Badger and throws it towards the camera. In one shot the mask has dropped below the camera, but a shot later the mask catches on the camera (as it's intended to). (00:11:05)
Continuity mistake: Skyler is holding Walt's hand with both of hers at the hospital when she asks what it was that caused him to end up there. Camera cuts and one hand is now on her baby bump. (00:13:25)
Continuity mistake: Walt Jr gets Walt Sr to drink apple juice in the hospital, he takes a drink from a cup that's 3/4 full, then sits the half full cup down. Hank comes in and camera focuses on him. When the camera returns to a wider shot the cup of apple juice is now 3/4 full again. (00:40:35)
Continuity mistake: When Walt gets home, Skyler puts her bag on the sofa and is browsing in the bag with her right arm. Camera cuts and now she's using her left arm. (00:42:10)
Continuity mistake: At the end, Skyler is applying lotion to her arm and her arm is upright. Camera changes and now it's horizontal. (00:42:50)
Chosen answer: It is part of the ritual for la Santa Muerte. It is a sign of humility and sacrifice.
djm