Don't actually use the 8x8-editor to edit graphics. While you can use it to edit graphics with LM, it is more elobrate then with
YY-CHR and I don't just talk about the saving system (which you can do if you F9 and then on
or
, depending whether you edit vanilla or custom graphics but don't forget to not change the level number).
The things which looks complicated is the language (you need to rename yychr.JPN/ .ENG/ .ENU to that language [see yychr_language.txt for more information] your comuter is set to and restart YY-CHR) and stuff which only looks complicated at first are why all graphics are glitched (you first need to set the graphics format [even called so if YY-CHR is set to English) on the left but not quiet bottom dropdown menu first) and why all colours are glitched (you need to export a palette in LM, then press on the third option [called "palette" if YY-CHR is set to English) at the top and take the first option with "(.pal)").