With Colton (who has been eating our food, mashed/cut into small pieces, by himself since 9.5mo) I just put the food on his tray. I've never been really worried about him making a mess etc.. because I believe no matter how long you wait.. they will make a mess! I dont put all the food on his tray at once because he will start playing in it. I just put like a few pieces of meat, and a spoon or two of each of teh sides on his tray, and when he eats all of one I just scoop more on there. It also saves me from having to clean up a WHOLE mess when he is done (and wants to really start flinging stuff off) because there are usually only a few pieces!
He does get a spoon and will sometimes scoop stuff on it, but not always. Usually it ends up in the floor and he is eating with his hands. He also doesn't get a bowl/plate because then he just wants to fling the whole thing into the floor with food and all.
He is really good at feeding himself now. Eats everything we eat, by himself, and unless it's something that is inevitably going to be messy (like spaghetti, etc) than he is usually really good and just needs his face and hands wiped. (Aside from the few pieces that "miss" his mouth and land in his lap)
On a note though.. I still feed him things that he wouldn't be able to pick up with his fingers, like his yogurt mainly. Although he will eat mashed potatoes by himself with no spoon! Which is always a good, little laugh!
AND I never fed Colton more after, even if most ended up on the floor. And I probably wouldn't recommend it. She will probably play with it at first, but after the first couple of meals she will know she needs to eat. I think if you feed her afterwards, she will get the idea that she can just play in what you give her, and then you will feed her the real dinner afterwards.
Good luck!