Okay, the inspiration for this piece was from different things.
1.) Rock Band, I've been playing it nonstop lately. XD And it's the Green Day Rock Band game too.
2.) At my school's talent show this year, I entered and sang the Green Day song "Good Riddance (Time of Your Life)". (And rocked the house too! Biggest audience cheer!)
3.) Trying to look for a good guitar, I thought of my initials, which made me think of Billie Joe Armstrong's guitar, since it had "BJ" on the guitar.
4.) Imma Green Day fan.

Well, maybe not that different...

I can't play guitar IRL, so I'd figure my fursona could rock out instead. But I'm pretty pro on the singing and guitar parts on Rock Band, and I can play them simultaneously.

Draw with pencil, pen. And colored with GIMP. (I suck at straight lines! T_T)