Welcome aboard!!
Yup, you done went and ruined it, might just as well put it up for sale here, someone feeling sorry for you will surely take it off your hands for ya!!!
Seriously, I wouldn't worry about it, worse things have been done, clean it good, inside and out, they come with a lot of gunk from the factory. Then pick up a box of Winchester White box 45gr JHP and head to the range and just shoot it, use any break in method you prefer from the shoot/clean ritual to just shooting it. It may take some range time to get it shooting the best, you may want to follow the recommendations in the FAQ and Help sticky, lots of tips in there to help.
Tim