Okay...I think I understand a little better what you're wanting to do. If you already have a flower made and you want to add leaves there's two ways you can do it (that I know of). If you have a kiln you can make your little leaves and put them in the kiln, don't put them too far back, but far enough so they'll stay nice and hot. Once your flower is ready and you've decided where you want the leaves, you'll pick up one leaf with your warm tweesers, move the leaf to the tip of your torch flame and heat it a little, also keep your flower warm...now heat the area on your flower where you want to stick the leaf...heat the base of your leaf and then place it on the flower. You'll just continue to do this until you have all your leaves attached. Then place the whole thing in the kiln.
Or, once you have your flower finished, you can add drops of green glass where you want your leaves...continue adding drops and melting them together to form a drop larger than the leaf size you want. Remember to keep your entire flower warm during this process. Now that you have a big drop of green, heat it and mash it with your bent foil tweesers, or a small masher. Don't worry about it's position at this point, just heat the glass and keep mashing it until it's the thickness you want for your leaf. You can pull some of the glass off if it's larger than you'd like. Once it's mashed out, and the size you want your leaf, then you'll start shaping it by pushing on the sides a little...then heat the tip of your leaf and pull. Pull off just a little of the glass and this will give you a nice point for your leaf. You can now shape it and position it in whatever direction you want.
There are some really good books out there that will give you step-by-step directions and you'll have some photos to go by. Making Glass Beads, Passing The Flame, or The Complete Book of Glass Beadmaking are all good ones and you might be able to get a used one through Amazon. I't's difficult to explain how to manipulate glass without photos, and I'm no expert, but these books are filled with color photos and advise from the best beadmakers around.
Good luck...Just remember to always keep your glass very warm to avoid thermal shock (cracking).