Definately a nice land mass you got there I like the texture that you have on the land too. My one point of comment is the rivers. First off,, I am not sure what you used to draw them but they look VERY blocky. Maybe try to use a thinner stroke or brush while drawing them so that the pixels don't just bunch up like they do atm. The general layout of most of the rivers look goo to me, but there are a few that have me pulling out my badge....In the top left land mass you have two rivers coming out on both sides of the mountains. No problem there, but each of those rivers have their own little problems; the west one branches off before reaching the water, when NORMALLY (depending on Gods or mans intervention) they would behave in an opposite fashion - Smaller rivers coming from their source joining up into larger rivers on their way to the ocean.
The east river also splits and heads in different directions. I would suggest eliminating the southern branch and add a third river starting at the south east of the mountains that goes through the lake instead.
There are others that do the splits on the way to the ocean but I really have no idea of the scale, so they COULD be deltas, but I have my reservations about that.
One last thing would be the hills symbol...they kinda make look at them a bit cross-eyed...they are a bit too close too me....maybe try eliminating a hill or two from the brush symbol...if you know what I mean. If not just ask and I will try to explain better but I just can't think of how atm....
Like I said before, I like what has been done so far, looking forward to seeing move forward. Have some rep for your first map