Hmm... is this your first map? If so, it's OK to try out the tools and so on but this map lacks many, many things that you can do with the editor and are vital for any map.

This being a CSS map it clearly lacks a theme, the gray fog looks boring. There is no lighting calculated. Also it follows the "big box" method of making one large square and putting houses and props inside which is bad because of performance and several gameplay issues. And this is just what you see from the one screenshot. You missed a lot of opportunities here.