1. Go to the desktop, or where you want the icon for it to be.
2. Right click, scroll over new, then click shortcut.
Now put the below into the box according to your operating system. You can change the bedroom map to whatever map you want.
For Windows x64 (64-bit)
"C:\Program Files (x86)\Blockland\BlocklandLauncher.exe" -dedicated -map bedroom
For Windows x86 (32-bit)
"C:\Program Files\Blockland\BlocklandLauncher.exe" -dedicated -map bedroom