It looks to me like the only problem you've got is the very same one as most of the young mappers have these days: You're trying to put all the sprites into one piece of work. I can see planks, wooden flooring, beach, new Carlin flooring, skull totems and all the other stuff on just a few sqm. It just doesn't go together. Maybe try focusing on a particular bit of the map or a specific setting, like nature, a beach or something like that, to make the work worth the efforts put in.
It's good to see you're creative though.
Regards,
Sey~