I would recommend you using Fast Async WorldEdit. Once installed do the following steps:
1) Put .schematic in /plugins/worldedit/schematics
2) Type in game: //schem load mcedit name.schematic
If you'd like it to only apply the schematic and not the air blocks (loads faster) do: //schem load mcedit name.schematic -a
1) Put .schematic in /plugins/worldedit/schematics
2) Type in game: //schem load mcedit name.schematic
If you'd like it to only apply the schematic and not the air blocks (loads faster) do: //schem load mcedit name.schematic -a