Mistakes like Skrtel's will happen early on as players get adjusted. Under any other previous manager, he likely would have wellied it upfield. That's fine.
The midfield three were porous after Lucas went off. Allen did his job very well, the other two were ok with the ball, not very good without it. Don't want to see Shelvey and Gerrard form 2 of the 3 too often, if they do, and it's Allen doing the bruntwork, he'll break down, the way Lucas did.
Decent performance, Sterling will now feel he belongs at this level, Allen's quality isn't something new, Borini really should be in Luis's positions in the first half. Onwards.