That's good for a first time almost half a pack. You'll do it eventually, no one tears a pack of cards first go ( i think).
Just keep adding cards slowly. The first time i tore a full deck it took me about 3-4 minutes before i could finish the tear and was a workout in itself.
Be aware that it knocks the shit out of your hands if done too frequently as well as sore elbows and/or shoulders.
A good tip: If you're tearing one hand on top, one on bottom, squeeze the fuck out of the pack on the bottom hand, really pinch that deck as if you want to crush those cards, then the top hand will create the tear more easily. Once you get the tear usually around an inch into the pack, turn the cards length ways , stick the forefinger into the tear and finish it that way, (as i mostly do)
Some decks are harder than others as well, as you'll find out if you're serious about tearing. I get a lot of cards from a nearby store and they're 39p a pack, so shop around cos you can pay up to 2 nicker for some and it gets expensive.
Best time to tear is after a weights workout, the hands are warmed up fully and are strong and it makes a big difference from tearing cold.
Good luck, its a nice feat of strength, there is no trick to it, its pure strength. I'm not far off tearing 2 decks(together), can also tear a deck in half , then quarters and is always a mind blower to onlookers, especially when you can tear a deck in under 3 seconds.
