One last thing, make sure each sprite frame is the same size
as or smaller than the original frames on the sprite sheet before
you edited it. If they are bigger, or much bigger, you'll have to use
an image editor to shrink them down, then try again.

Sorry man; I can't tutor you, but I CAN give you a tip. Tired of
using default RPG Maker sprites? No problem! To import your own
sprites, just follow THESE steps:

1. go to the graphics/images/characters folder in you RPG game on
your computer.

2. Go to a spritesheet for either walking or battle sprites for
the character you want to edit, and open it up with a tool that
can edit PNG images.

3. To incorporate your own sprites, simply highlight the frames you
want to edit, press the DELETE key to delete them, then paste each
image frame you want to use in the place of each frame you erased
(on top of each one). Ok?

4. Finally, after you're done, save the file to replace the original, or
simply name it something else to make it a separate file. Be sure that
you save it as a PNG image spritesheet so that the background
will be transparent and invisible.

5. That's it! You're done!

Hope you appreciate me letting you in on this perhaps little-known secret.