Some comments. I assume you are black.
The opening looks pretty good.
Not a big deal, but tiger mouth connection (at R14) looks better. Your move makes bad shape (empty triangle). Later you can go deeper in white's territory.
You should omit this move ; it doesn't have any purpose. You should be able to read the tsumego in advance.
I think this is a bad move. You give white a lot of territory and your connection isn't very good (imagine white E17 after the sequence). You can either attack white (for example F14) or defend one side (I like K17). Your top left group should be able to live by himself.
Given white's strength at the right, it is hard to call this an invasion. It looks like a reduction that's a bit too deep, so I agree with your idea that you have to play behind it. You have to options to consider: attack directly like you did (althought I find L10 more natural), or lean on the other group (for example P10 threatening R10). Generally speaking you should lean if you don't see a successful attack without it.
Leaning is the idea. But here your threat is really small. White should give up his stone without regret. When you lean, it is important that your follow-up is scary for the opponent.I'm not reading all the sequences in the fight, I'll just comment on weird-looking moves.
why do you play hane instead of going straight? You are helping white by pushing towards his own stones, and you leave a cut. I suggest going straight at L14.:b109: White lives with two points, but it is hard to see Black's points. You played solidly and your groups are alive or connected, so you should take sente. 109 and 111 are unnecessary defenses and small in points. I suggest C10 to attack top left, or R11 (connect at the top or at the left). Your opponent also plays some small moves.
:b149: Ignoring the two stones to grab the points: an excellent move. Killing white seems impossible with the connection at the right and your own problem at the top. But you grab enough points to ensure victory, even without white's mistake at 184. Well done!
(I didn't read any part in detail; if you would like more comments on some of the local fights, ask and I'll do it sometime.)
