If you cooked the first side according to my instructions, the tortilla should eventually puff up like this. Rarely, they don't do this and it's not a huge loss, but you can "tickle" them into puffing up by mashing down on the top with a turner. Wait about 30 seconds after they've puffed up or check the bottom for light browning, then remove from the heat.

Adam giving me some cooking instructions, preparing some steamed vegetables and bean soup. It seems he was a bit frustrated with my slow moves at the kitchen since my parents never let me stand in a kitchen since I become blind, but I started cooking with his instructions.