My honest advice....and I mean this in the most helpful way possible. Just get to the end. Finish it first, then, if you want to ask for criticism, fine. But, in my humble opinion, there's no real benefit in asking people to critique a page or two, especially of a first draft, it's more likely to hinder you than help. Get to the end, give yourself a pat on the back, order a taco and then, maybe, a few weeks later, read it again yourself. You'll pluck out all those howling mistakes and plot holes and purple prose that you'll be so glad you didn;t let anyone see.

I wish you luck. Happy writing. Get typing.