Make sure you put the editor folder in your Blockland folder, not addons or base.
After you do that, right click on Blockland.exe (the icon with the black B) and select create shortcut. Right click on the new shortcut icon and select properties. A window will pop up, go to the general tab. In the box next to target type in
"Blockland.exe" -mod editor
If that doesn't work, put in the location of your Blockland folder before the code above - if your Blockland folder is in program files, then your code will look like this
"C:\Program Files\Blockland\Blockland.exe" -mod editor
Hope that helps