@Classicler 3. d5 seems a bit too early for a center pawn break. White has a space advantage in the center. As a general rule, the side with the space advantage should avoid trading pieces. 3.Bd3 or 3.c4 seem like better options. After 3.c4 d5 4.cxd5 exd5 5. e5, white seems to have a dominant position in the center. The e5 pawn stops the black knight from going to f6 and generally makes Black's development awkward.
6. Ne2 is a glaring error that nobody else has said anything about. It blocks your bishop on f1 and seriously impedes your development. The only reason one might avoid playing Be2 is if one is worried about a move such as ...Qg5, attacking the weakened g-pawn, but that is obviously not possible in this case. Be2 was much more accurate.
7. g3 is a bad move because you did not realize that Black can occupy the h1-a8 diagonal first with ...Qe4. This forces Rg1, which prevents you from castling kingside. Black has a significant advantage in this position. Although...Qe4 is a move I doubt a 1100 rated would find, it's certainly something to learn a lesson from. You should usually only open up the long diagonal if you are certain that you can occupy it first.
9. Nc3 is ok, and not classified as an inaccuracy, but I feel it is necessary to emphasize how much better 9. 0-0 is. 0-0 is a better move because it achieves many things at once. It gets your king to safety, allows the e2 knight to move, and prepares to move the rook to the e-file.
11.f3 is a serious error. It blocks your excellent g2 bishop, weakens the crucial a7-g1 diagonal, and weakens your kingside structure in general.
The rest of the game is fine.
For this rating level, I suppose I would rate this game a 75/100. Your tactical awareness was pretty good, and you followed general chess principles decently well, but you did make a few errors mostly related to piece placement/development.
Hope this helped.