depends on what they wrote on that paper....if it was JUST your name you should be ok, if it was your name along with your DL # your fucked....BTW when you make a purchase with a credit card they are NOT allowed to write down any information from your ID or even make a photocopy of it at least as long as you are not applying for credit with them. Its illegal for them to do so, its a privacy concern. The only thing they can copy is the front of the credit card but NOT the back
Something similar liked this happened to me a long time ago but I never used my real ID carding. I bought some shit from a store about 3k worth and when I went to my car I seen the store manager almost looking at the vin on my car and possibly writing it down. I just returned the shit and paid cash for it so as the shop wouldn't get a charge back and be pissed and then subsequently hand over the information.