How to dress for choir concert while making it look more edgy.?

For my 8th grade concert, I need to wear a white top and black shorts, black pants, or a black skirt.

(I am a girl) Ties are okay.

I don't know where my cuter black skirts went to.

For the basic outfit, I own a white blouse, a black skirt like this:

http://www.google.com/imgres?sa=X&hl=en&biw=1920&b...

black shorts like this:

http://www.google.com/imgres?biw=1920&bih=955&tbm=... (only they are a tiny bit shorter with faint grey plaid) and black leggings.

For shoes: knee length lace up combat boots: http://www.etsy.com/listing/105359071/vintage-tall... black flats, 3 inch black heels, and shorter boots similar to this: http://www.jadedminx.com/ranger-301.html

For accessories: I own a Black tie, red strap on bow-tie, and a loony toons tie. Black and white suspenders (it's half and half) and maroon suspenders. Black clip on hair bow.

I don't know if I have safety pins, but I might be able to find a few.