See this as positif feedbackand and English is not my mane language.
For me (so far you build) it makes no sence. The trees are a messup. Pine trees should be not mixed up with pink blossum trees Normaly they are on higher ground. A big cristal just out of nowhere. A big wide watterfall comes out of a big rock who starts wide and quit still standing water. A few meters on the waterfall. No sign of a current. The ruine is new. No signs of decay. It should be old when abandend and lost of decay. The statues have a burning torch. How is that possible? It is abandend for years. The path leeds to now where. Straight into a mountin wall. The skeleton bridge looks out of place. Doesn't belong there.
The rivers are in a strait line. Try to camouflage it. Now the sandline is everywere the same. You can almost see how it is build. The ground looks like it is made to fast and to easy. No realy obsticals. It looks for me like an easy build.That Mythical Land (or what the name is) don't compare yourself with that. That's an easy and quick build. About 20% not playable because of the (strange) mountins. No path and nothing to do upthere. Don't make the same mistake.
Overall, it is not bad.
But don't try to make it to fast. Don't throw stuff around to fill up spaces. It looks clumsy. Try to think how natur works. I know, it is not easy to make a map.
So keep up the good work.

@Skywalker Thank you for the honest feedback mate. Appreciate it and I will try my best to think about these points and improve in these areas. :)
(Btw the mixup of the trees was on purpose to make it a little bit different looking)

Oh another thing: there are indeed no flow maps for rivers yet, these will be added later to make it look more realistic like the current you were talking about. :)