Use hidden=Screen shots (screen shots) /hidden , because that way its more organized , and your page looks better, also try to put colors . You can see all the colors and how to put them by just writing on google ( or other search engines) BB codes , colors . Or just look above for a link ( When changing your description there is a green button (Try reading this tutorial) and there will be every thing how to do that stuff)
Also write why people should play your map , like what its different then others and what magical tricks it contains that will make me or others as players or testers to choose your map.
Also I tried your map , and for terrain , I will disappoint you there , its to empty . To much empty spaces , only one sometimes two titles dominating the map its the grass and dirt , try mixing them up or add different tittles of grass , so it wont look so plain .
Walls and buildings needs to be lowered . You can do that by clicking on the building and pressing Ctrl+Page Down to lower and to rise them its Ctrl+Page Up.
Cliffs looks strange , make them little taller and give them sharper edges. Also I looked at your map from creator , I see what takes so much doodles , its the pathing blockers .Instead of those small ones use bigger ones , they take x4 times the space then smaller ones.
Now about the trees , put them in circles instead of squares . It don't look so natural.
Also when taking screen shots from the editor press "I" key so you could take pictures without purple blocks.
Now with gameplay , I kinda like it . Cant say much about it .
Anyway keep trying , every must start from somewhere.