Some times the pawn structure speriority is not enough

 - I lost this game as well, take an material advantage was a mistake.

In your first game playing 7.d4 would have given you a nice advantage. Central superiority and tension that benefits white. Don't fiddle with pawn moves like h2-h3 unless they do something concrete. Also, you moved your light square bishop four times before you ever move your darksquare bishop. You need to have all of your pieces in play. 11. Be3 would have given you a classical piece+pawn center. Also, trading night for bishop while you continue to open the center is not a very good idea. 

In the second game you were fine until you started to move all of your pieces away from the king. It was not taking the rook that killed you, it was moving your queen so far away with your oponent's pieces all on your second rank. Also, your pieces were so far away from his king you could not make any threats of your own.

If I may make a criticism: you over value pawn structure and undervalue other factors like minor pieces and the dynamic elements created by doubled pawns. Doubling Black's pawns in the second game helped him. It gave him an avenue of attack down the g-file and more central control.

thank you.

You are very welcome. I'm glad you did not think I was being too hard on you.

Interesting. You seem to have trouble deciding on your own ideas:

...a6 and ...h6 combo for black in first game is weird enough, and you may be justified in playing the 6.d4 break immediately.

Still, your 6.c3 is a nice preparatory move as well, but since it obviously prepares d4, why not following through? the only reason an opening in the center will benefit you is a slight lead in development. wait too long, and it will not be as big, or it may altogether fade, so you simply haven't followed up your (good) idea correctly.

7.h3 is just a slow move without any special purpose that I can see, and after Bd4, when you do break the center, black has one more piece that is active (knight is no longer pinned and long castle is closer)

of course, bigger issue is, since knight is not pinned after Bd7, black doesn't really have to take on d4 himself for now (shouldn't have actually, after he did, you get a very good position too)

12.e5 seems to allow a central exchange AND black can get all his pieces to the kingside. so white can't hope for too much there. I wonder about 12.Nd5!? this guarantees the two bishops IF you want them, or just maintaing the strong knight there and letting black keep his bad looking e7 bishop, all depends on black's response.

Another interesting bits, not that black's fxg6 is bad, I like his position, very double edged, but, black probably has a better idea, in

13...exd4, flipping the problem on you:

NOW, if 14.Nxd4 fxg6, black's pawn that would have obstructed his pieces' access to the center/kingside is off the board, and black looks like he has a better version of fxg6

If 14.Bc2 dxc3 15.bxc3  and it's white's pawn structure who needs serious help for no compensation, and something like 15.Qd3 f5 16.Qxc3 Bd6, the initiative is black's again.

complex position.

Later, after the trippling of black's pawns, black had all the other trumps in the position.

Although I would dare say after your 21.Rd8+ the game may still be balanced.

and after that, it's all tactics, 21...Kh7 seems to allow the powerful 22.Rc8, which should have been played immediately (instead of Kf1) (Rf8 would be better probably, even if it offers a draw).

24.g4 ? probably a very big positional error.  this makes sure that your own healthy panws can never move, can never create healthy exchanges, should hte need arise, and are now weak and attackable. I would reply ...Rd7 hoping for either Rd3 or Rd2. one side or the other will be in trouble.

after 50.Rb1, nothing to be done for either side. although probably an easier draw would have been to just not allow his rook to come behind the passed pawn with. such ease

nice game to look at.

A couple of notes in the second game: look for ways to have more pieces in the game than the opponent:

instead of 5.d3, 5.Bc4 seems to give you an excellent position. black will be in trouble immediately.

This is an opposite side castling game, so whoever can make his attack faster wins. Therefore:

10.Nxf6 gxf6 gives black just what he wanted. probably white is already in trouble.

black gave you a counterchance to equalize the odds: 14...Qb5 15.c3!?

drive him back and get your pawns roling.

or after ...Nc6 you can even try Qh5 to stop his attack immediately. possible. double edged...

22.Qh5 is the final blunder of game #2:

22.Qe1 , you're still in bad shape, but no easy win for black yet (may be defensible yet):

for instance: 22...Bd2 23.Qe4 Ng5 23.Qf5 hard to break through, and black's king will need protectors too soon. although black has the advantage probably.

quite a game:)