OK here is a more comprehensive post about what I did;

Basically what I did was do two NitM rips. One of normal Richter, and one of the alt costume. Note; Original costume NitM version did NOT have to be cleaned up, because it is only used as a reference to the size distortion. Then I basically just shrunk them one by one based on the original sprites.

As you can see here I have three example poses of each. Because they did not redraw the Richter sprites, and simply cheaply resized them, you'll notice there are some duplicate columns of the same pixel pattern. Essentially this is making a double line. Now notice, when they went and edited the alternate costume, they did so AFTER the resize. This means the double lines are usually obscured by the edits, so we need the original costume resized as references. What I did was pretty much just remove one of the two columns, usually depending on what looked best per frame.
This is the mother sheet with all the poses I had done;

And so, this was the result;

And for the finalized gif with palette etc;
