That's a good job with the rivers! They join properly, taper nicely, and meander very well. Where a river reaches the sea, if you want the delta to be built up to a wetlands, you can draw multiple channels through the wetlands, that does not violate rivers splitting, just keep it within the wetland area. A good example of how to do this is to look at a braided river, then make a slice across it representing where the seacoast would be. http://nile.riverawarenesskit.org/En..._channel02.jpg