Follow these simple steps to change your Minecraft skin:
1. Start by opening any browser on your desktop and navigate to https://www.minecraftskins.com/. Doing this will take you to the skin index library.
2. Once you get to the skin index library, all you need to do is to select a perfect skin type for your Minecraft character.
3. Check the right side of the skin's page and click the download button.
4. After you have successfully downloaded from the skin index library, continue by navigating to https://minecraft.net/.
5. Click the menu icon at the top-right corner of the page to cause a drop-down menu to appear.
6. Click on profile, then click on "Select a file."
7. Remember the skin file you downloaded in step 3? Click open to upload it to the profile page. Then click Upload to upload the skin. Doing this will change your Minecraft skin.