HD subfolder is for iPad, SD subfolder is for iPhone and the difference is that the HD files are 1024×1024, SD is for lower resolution files

1. (this step is for if you made the skin yourself) Go to file application, find stick nodes, create a folder called “skin”. Next, create a sub folder called “HD” and “SD” then a file called “textColors”(you can find this in Ralph’s base skin pack down in the comment section somewhere).

2.(this is for if you are downloading one) Go to file application, find stick nodes, create a folder called “skin”. Next, paste all the files you downloaded in there, there should be a HD version, a SD version and a file called “textColors”.

Hope this helps. If it’s confusing, imma have to make a video.
Also there will be grammar mistakes because I quickly typed, don’t mind that….