ok so im probably the least qualified to do a wolf redline because i never draw them
BUT they have a dip between their eyes and where their muzzle starts, and the muzzle isnt completely straight either. Their mouth and nose shape is slanted towards their neck aswell, it isnt just straight.
in addition to that, from the side, their eyes look sort of pinched in the corner (?) I dont know if I explained that clearly but here ya go!
references are your best friend, and so is fur direction