The layout of a map is among the most important parts of a winning design, try making sure exotic geometry is removed or clipped and the level is open and free of dead-ends or unexplained phenomena.
Refer to the Packaging Guide for information on how to fix this.
Screenshots let people get a feel for your work, and is the most important part of a node. They should be the correct size, and have no heads up display elements. Refer to the User's Guide for information on how to fix this.
This is a space map... an oval sitting in space ... it is a small map for no more than 4 people... instigib or ffa would be good options on this map... also efficiency or any other ffa type game