Since you are making a game, why not try to get some experienced help. Just recently an amateur game got released for RPG Maker XP named "World In Danger", a somewhat medicore game, good for an hour fun or so
If you can get it to work properly.
Anyway, the game featured a few good animated TF sequences. One of a girl into a large lizard, and another of a woman into a robot. The sprite art looks equivalant of that of a real 2D game. You can see for youselves in the attachements.
The author of the game is always really helpfull towards people trying to make games, especially shooting games. I'm sure he will be able to help out if you ask him.
here is the website:
http://coltgames.com
The author also appears to have a grudge against Pokemon for some reason, the other game featured on his site feature a full blown trilogy of Pokemon killing games. I think there are some Pok?mon TF's in it tough