Just found a TFTG story comic on FA called, well, The Out-Of-Placers. It's at 21 pages right now, and according to the author will likely run to over 100 pages. The transformation starts on page 13, though fully understanding it requires starting on page 10. But frankly, you're only skipping 10 pages; you might as well start at the beginning.
Which is at
http://www.furaffinity.net/view/13286847/
The artist doesn't have much on his (her?) page other than the comic. But from what's currently the top journal post: "I was also a bit worried that the main plot point (occurring around comics 13-15) might scare away some otherwise interested readers, but it looks like exactly the opposite has happened! Which is great, because I intend to make the experience of living as a completely different race and gender a central part of the story. After all the encouraging feedback, I'm a lot more comfortable about taking this route."
So check it out. This is looking good, and it seems s/he has some definite ideas in mind as to where they're going with this.
Oh, and there is process, though it's kind of scanty. The character goes from only a few changes if you look closely, to fully formed. Oh, well. Can't have everything, I guess.