Continuity mistake: When the episode starts Arya is walking towards where Daenerys is and has her face covered in mud and soot, plus a long streak of dark dry blood running through the right side of her face. The next time we see her her face is cleaner and the blood is less noticeable. In further shots the amount of blood increases or decreases randomly. There doesn't seem to be much water and soap around the place.
Continuity mistake: In this episode, Kings Landing is shown as sitting on flat, plain-like terrain. In previous seasons, it was shown surrounded by water and mountains covered lush greenery.
Continuity mistake: During the meeting at the Dragonpit, Sansa is wearing her long silver chain and circle neckwear, with the long chain changing the way it is placed through the circle. First the chain is put through the circle in a way that's over and under, but in some shots the chain is put through the circle the opposite way, under and over. (00:53:10)
Continuity mistake: During the battle strategy meeting around the table, Sansa wears the long silver chain and circle neckwear, and the long chain changes the way it is placed through the circle. Sansa's chain is put through the circle in a way that's over and under in most shots, but when Jon explains that if the dragons are in the field they won't be able to protect Bran, the long chain is put through the circle the opposite way, under and over. (00:30:05)
Continuity mistake: In order to save him from Drogon's fire at the very end of the episode Jaime is thrust by Bronn into water about 40 feet deep. This shouldn't have been possible especially after Jamie is shown galloping on his horse along the watery beach side just moments before.
Continuity mistake: The difference between the heights of Ser Jaime and Lady Brianne continually differs. Sometimes Brianne is taller than Jaime by several inches, and at other times they appear to be nearly the same height when standing side-by-side, even though they're always wearing the same clothes and boots.
Continuity mistake: When Gendry gives Arya the dragonglass weapon that he made for her, in the following shots Gendry's leather cloak straps switch between being crossed with his left strap over the right strap, or his right strap over the left strap. (00:43:00)
Continuity mistake: When Jon and the others emerge onto the other side of the wall, there are 4 people with torches. Pay attention to the one at the back on the screen left. He has his torch in his left hand in this shot, but as the shot changes to the front he now has his torch in his right hand. (00:44:30)
Continuity mistake: When Grey Worm leads Tyrion to the Dragonpit, as they pass the column of Unsullied their long individual shadows are directly to their sides, but in the next shot the Unsullied are seen in the background and the shadows are entirely different. (00:46:00)
Continuity mistake: When Daenerys is dead she has blood underneath her back and hair, and as the camera is above her, her right arm is curved or bent a little. When Drogon picks her up her arm is now straight and despite the blood on the ground she seems to be completely clean. No blood on her back, hair or scarf. Then as Drogon flies away, how on earth did he pick her up with his left hind leg? Did he twist his leg 180° to pick her up with his front claw?