some kerns, especially those with amnopvw- as the first letter, look a bit too tight for me, maybe making those pairs looser by a pixel. You don't want your letters colliding with other letters when kerning.

Note that the font in the sample below is an example font and not an actual font that I am working on…

Dont just kern only guided by individual pairs, because that wouldnt do justice in actual text. Because if you going to change the values for one certain pair, it will allways causing effect throughout the entire font, perhaps making it stand out away from the global piece of work, so becareful before making too much kerning adjustments.

U'd be better off by first attending glyph spacing within the grid ;-)

cheers

Also I notice that lowercase "u" should be raised by one grid unit, its too small right now, also the stoke for the crossbar on lowercase "t" would look better one pixel unit less making it match the serifs I guess, but this is pure personal taste ;)