Beta?

[blackletter]

I got a little carried away with the recent "audio challenge" and now I have 5,500 word Valeyard/Ainley!Master fic (which is part one of a planned three or four parts) inspired by "He Jests At Scars," which is in want of a beta. In particular I'd like someone who can 1) check that the characters sound like themselves, since I'm fairly new to Old Who 2) tell me if my timey wimey stuff makes sense and the corollary that my exposition doesn't become repetitive or heavy-handed in my desperation to make sure the timey wimey makes sense. 3) general beta awesomeness, ie, tell me when my sentences suck, my narrative falls flat, and my commas cavort where commas ought not go.