Reasons for removal:
Majorly, the lack of quality.
All that's in the set is 3 poorly drawn ground tiles, and 2 weird blocks with smileys on them. The graphics dont have any detail, except for a few grey lines in the solid green.
The tileset is so small that it's practically unusuable, and it's so bland that no one would use it.
You have a lot of work to do if you plan on submitting this again, you should first take a look at some custom grassland tilesets that are already on the site, and get an idea how for example the grass should look, and what decoration you could add. But first of all you have to work on your graphics drawing skills, because this just doesnt fit our standards.