a 3 cause there was nothing obciously wrong with the conversion. But the course sucked, ctrl placements okay, and the terrain sucked and the heightmap sucked. Trees were okay. Try out some different groundtextures and dont use as much random terrain-height
scattered trees looks good. middle green trees look great. use them in normal forrest too :D still some troubles with paths and shrinking is needed.. also try to use the ocad mappicture not the automatic generated map