LR2 / Lunatic Vibes (F) Skin help

Download LR2
Download Lunatic Vibes F
...because you need the game to create a skin for it, duh.

This guide was created as an extended English version of the original LR2SkinHelp, adding the extensions of modified/forked LR2 clients.

It is recommended to read the original guide first, as it is more through and contains solutions to problems not listed in this guide.
Moreover, since autotranslate was used, some parts will definitely be lost in translation.

It is also recommended to read through the sections one by one if you're completely new to skinning, as it is easy to get lost in the amount of information. (Speaking from experience.)