Esteemed Mr. Liverlips,
Your hands are perfect.
Even if you have to use 1/4" x 1/2" cards, SO WHAT?
If you are just starting, it can ALL seem daunting--and it IS daunting: there is a LOT to learn from a LOT of EXTREMELY clever people, and it has been accumulating for a long time.
But you're a rookie--a tyro: you are neither supposed-to, nor expected-to know it all and (or) be able to do it all YET! So chill out and play with your cards.
You need to handle decks of cards a LOT. For YEARS. Of course you will be able to do zillions of great tricks much sooner than that; but I am reminded of a quote by legendary golfer Lee Trevino, "Touch is not something you're born with, touch is something you acquire after hitting millions of golf balls".
Jamy Ian Swiss has written about the sensuous and sensual qualities of a deck of cards in one's hands. A deck of cards is truly one of mankind's most infinitely ingenious creations. You'll be learning about the cards for the rest of your life, pal.
No musician say, is "THAT GOOD" the first instant they're introduced to an instrument (except Mozart and Gershwin but I digress). Eventually after having worked with your tools for hours and weeks...things that seemed impossible will suddenly flow. You learn things, you become more efficient. Pretty much everybody goes through it. I look back fondly on the year it took me, and the literal blisters (small, but they stung) I endured trying to stretch my fingers doing Daryl's Hot Shot Cut from "For Your Entertainment Pleasure" about a million times. But now I can do it 'till the cows come home! HA!
Everybody, except the elite super-freaks we all love so much, needs to put in the time.
I encourage people of all ages to do everything creative they can think of, because I believe "that" is frequently squelched when we're kids. SO, somebody says your hands are "too small", you say, "too small for WHAT?!" & smack 'em in the chops.
P.S. Just curious, but is your nickname in any way connected to the Damon Runyon character "Old Liverlips"?