EdLee wrote:

Maybe slow. ( Re:

..

) No severe follow-up because you allowed W to make a nice shape by

.
You can consider J3 direction.
Yep, your explanation for why

fails as an attack makes perfect sense. However, given that, at this point, what is the biggest area to play? The top, right, and bottom all seem very open, but I definitely would've leaned toward approaching the top right or bottom right before J3.

You can consider J3 direction.
The top seemed more open so I thought playing there was bigger than playing on the bottom with two relatively developed corners. Is the bottom bigger because both of our positions are high, therefore a territorial grab is more profitable?
The bottom side was definitely on my mind, but if I played first in the area, I would've chosen K3. Why J3 rather than K3? Is K3 an overplay?

Slow.
I was trying to simultaneously put pressure on white and also strengthen my top/connect my corner to K16. What would've been a better play here? Would it make sense to play H13 to cap white?

Unclear what you're trying to do with this move.
Globally, J3/K3 direction is the final unclaimed big point.
If you want to attack W, you can consider to first peep at D12,
to make W heavy while preventing his connection.
At this point I was worried about my two black stones, and

seemed like a good way to simultaneously connect those to the bottom and also to press white's group down and contained.

Almost a pass.
Example: F14, if you want to stop W.

Peep first at F14; then you can stop W.

What's wrong with F15.
G15 seemed safer and more solid, but I think I shouldn't have been in this situation in the first place, as I should've played F14 much earlier (like the two moves you pointed out).

Bad wedge.
White and I actually reviewed this after the game and we came to the conclusion that it should've succeeded if I played F12 instead of B59. However, it would've only really cut off H10 and H12, and since the rest of white is completely alive, the whole play (even if it succeeded) was of dubious value.
Also, thanks skydyr and Charles, those comments were very insightful.