Always place the round parchment paper disks underneath and on top of the dough. This will prevent the tortilla to stick to the press.
If the tortilla doesn't look quite even after pressing or you'd like it a little thinner, rotate the tortilla in the parchment disk and re-press.
Do not clean with water: Cast iron is fickle and can easily get rusty but it will last a lifetime if it is cared for! Wash, dry, oil, and burn/bake in the oven and it will be as good as new! Oil the press with olive oil then toss in the oven at 200° for an hour. Cast iron will rust if wet... Even a little! But rust hates oil so oil away and rust is gone.
Any leftover tortillas that become too stale or dry to eat as tacos can be fried or baked into tortilla chips