Well done, learjet 45. Now you can drive home and smile at all those chaps driving fancy cars - you are one up on nearly everybody!
Don't worry about crossing that runway without a clearance, I hope you had a jolly good look to see if anything was approaching before you did it? I got told off big time in Ann Arbor, Michigan, with 500 hours under my belt; turned out the aircraft had to go to the other side, I crossed at the end of the runway without clearance (tired, stupid, didn't think) and had a call that my presence was required in the Tower. Apologised like mad, couldn't hear much anyway on the lousy overhead speaker (never flew again without a good headset). I told the controller I was very very sorry, but I did have a good careful look before crossing and nobody was coming.....somehow that didn't impress him very much.....never done it since......
Anyhow, have fun, and keep a good lookout! and don't be ashamed to do a 180 if conditions ahead don't look too good.
Best wishes for happy landings.
Mary