Here is the sgf:
Quick remarks:
is better at C5. If Black responds with D6, then 
at F4 or F3.
reinforces Black, and in addition, after 
, you are surrounded, which is bad. should be used to split Black into two groups, for instance with D6.
good! Black is surrounded and Black has to live in gote. (Edit: but there was a better move, see Bill Spight's comment below.)
maybe not urgent at this point, since you are almost alive. at P14 would give you more territory (expands your territory while reducing Black's).
for life and death comments. 
117 is a big mistake, and you didn't have to connect. Instead, White could have cut on the second line for a large reduction. Black can't cut at S14, because after White captures, Black descends, and White fills in, White has 3 liberties vs. Black's 2 liberties.
fills in and B's 2 stones are dead.