Your BitSkins account has a permanent Litecoin Deposit Address, which you will need in order to withdraw funds from Idle-Empire to your BitSkins account.

In order to find that address, simply follow these steps:

  1. Visit your BitSkins wallet
  2. Click on "Litecoin" in the "Deposits" tab
  3. Click on "permanent Litecoin deposit address"
  4. A popup will open that displays your Litecoin Deposit Address

Here's a video showing the process: