Thanks for all the information Caenwyr and Viking, Ive removed the huge delta and changed it to a single river instead. I decided to go with the south side of the sea rather than the north mainly because I wanted a natural nation border in that area. I think I am happy with all of the bodies of water, and moved onto forests and country borders. The north and western parts of the continent are covered in a massive pine forest, the south and eastern parts of the country covered in temperate oak forests, and the mid-northeastern part of the continent is a mixture of both forests. There are two swamps, one in the midsouthern part of the continent (south of the large sea) and on the eastern coast of the continent. Im curious if these are acceptable places for swamps, I really don't know how they are formed or where they are normally located, though I know Florida is a swamp on a peninsula, so I placed them near the oceans. Also, the land above the huge trench is snowy year-round while the land below the trench is temperate climate. (I do need to signify the snow, somehow).