Thank you for your application.
Our mapping is all done by the community, so we don't have designated 'mappers' within the Eastern Front team. So, all you have to do is post maps (along with several screenshots) in the Mapping sub-forum. If our developers feel it is a worthy inclusion, then we will simply plug it into the mod.
Don't worry about your language, your English seems fine and a large proportion of the Eastern Front developers are German.