Ah, congrats! I remember when my first patch was accepted to FreeBSD (systat -ifstat support), was a fantastic feeling (I was early 20s at the time). PHK was the one that picked it up too (guy behind Varnish and general contemporary wisdom, among other things), which was neat.

My number one piece of advice to college kids that want to differentiate themselves from the pack is to try get something substantial (i.e. new feature or tough bug fix, not just something small/cosmetic) committed to a prominent open source project (ideally in C or C++). From a hiring perspective, knowing that you were able to get a patch accepted tells me so much more about you and your technical competency than anything else on your resume (or your internships, or your GPA, or which school you went to, etc).