Agreed with Cynic, your never get ALL the oil out unless you strip the engine down.
Mailee, prop the bike up on a block of wood under the side stand (with some thing to stop it falling over the other way) or get a helper to sit the bike up straight as said above and check the oil glass then.
if you still can not see the oil drop then drain the oil and take off the cover, you can get a cotton ear bud in there to clean them but if you want to take the glass out is just a circlip and then it pops out.
But dont forget to buy a new gasket for the cover before you take it off.