Beginner searches for help

Hello guys,

I have just startet playing chess again a few weeks ago, since I quit playing at the age of 10. So I'm more or less an absolute greenhorn again, but it is really fun! After a few weeks of getting in touch with the game I want to improve my gameplay now and looking a bit more on the technical and tactical part of the game (until now I have mostly played intuitively, without learning any openings etc.). So 

As an example I have this game from yesterday. While playing I thougt that my position looked pretty good, but it just ended as a draw. Maybe you have some tips for me or show me some mistakes I made in the game (I'm sure there are plenty of them ;)).

Thanks in advance!

From a rough beginner's anylysis it looks like you got a little greed with your bishop and lost your lead there.