The water level in the glass that Lex taunts Aquaman with changes levels throughout the scene
Lois's hair is soaking wet after Arthur lifts her out of the lake onto the dock yet minutes later when Arthur comes back ashore after being affected by the LutherCorp device her hair is completely dry.
When the doctor draws the blood from Aquaman, she makes three errors: angle of insertion, direction, and tourniquet usage. Her angle should have been shallower (as to go in but not through the vein), gone towards the shoulder not the hand, and a tourniquet should have been used.