Besides what looks like some nute (P I would guess) burn it's impossible to tell with those pics. Strain and time flowering would help.
My advice is to fuck looking at the trichs. Your plant will look done when it is done. Your calyxes should be swollen, and all your pistils (hairs) should be changed color and receding back into the calyx. Ripe bud has an almost golden tinge to it; not truly amber at all, just a slight golden hue on the periphery. Trichs (for me at least) should be mostly cloudy, with a small amount of amber. I don't follow the whole "amber trichs makes weaker pot" theory. Yes, the THC has degraded, but THC is also only one part of the mix. IMO strain has a hell of a lot more to do with effects than trich color.
There's some really good guides stickied at the top of this sub-forum that should help you out.
Happy smoking man!