I am playing as white.Any advice for me?

I have a thought, but you ARE playing?
you should first finish the game then ask

Well,I was playing against computer so no need to worry about that.

Ok my Idea would be: opening on c and d. Notice the b pawn is still undefended and the bishop on g7 is on the same diagonal. Nc3 would be my first move. Attack on d5 and the c4 pawn is still defended enough. After the computer's move (probably something like defending d5 more). You can Nd2(other knight). You should do that maybe even before the other move. All your pieces can be active before opening up the structure.
after that I see possibilities of opening on c and e with your pawns, preferrably c.
The advantage of initiative is good in a stuck position like this.

I am not an expert at analysing a game, I will give it a try.

First and foremost you have not mentionned what your development or attack plan is.

From the board position the whites have a slight positional advantage and to exploit it does require a lot of technique.

It all depends on what you want to achieve, if you want to keep a closed position and reinforce your position to see what happens, then I would play pawn to b3, but this is not active, a better move would be I think pawn in c4 takes black pawn in d5 and now the chain reaction starts, bishop in e6 takes pawn in d5 and white bishop in a2 takes bishop in d5, follows black queen takes my bishop in d5. I would put my rook in c2 to protect my pawn in g2.

What follows I do not know as I do not have a chessbase software. The two things that I try to do are:

1. If I have an equal position and I can exchange one for one pieces I do it  

since it is easier for me to resolve the outcome.

2.If I have any advange, positional or especially possibility of a mate I immediately go for the exchange to reduce material on the opponent side to cripple his actions or plan.

If anyone has better suggestions they are welcome and I will analyze them.

 

u can win apwan by

1-cxd Bxd then 2-Bxd Qxd then 3-Nc3 ( attack on the Queen an a pawn )Qh5 to defence his pawn then 4- Qc2 to attack on a pawn if he defence by any piece u can sacrefice your knight and take his knight with pawn thus

( 4-.... Ra8 5-Nxa3 Qa3 6- Qxc6 )