When raising energy, you will feel the energy level increase to its maximum; that is when you send it toward your goal. There are many ways of doing this, but they all require focus and the power of the will. You need to focus the energy somewhere - it may be within yourself, on your hand, above your head, within a candle flame - whatever. It doesn't have to be a physical place, but that's easiest for beginners. It's easier to direct energy from one concentrated point than from a general blob all around you (especially since you could end up sending your own energy with it, and that can really drain you). Keep in mind that size doesn't indicate how much energy is there, or how much power it contains - something may be relatively small, the size of a baseball, but be on the point of exploding with its own internal energy.
Here are some visualizations with the ball of energy you've formed that may be useful for you:
Hurdling it into space at the speed of light
Dropping it into the Earth and seeing the tidal wave ripples of energy travel toward your desire
Seeing it as a blinding flash of light as it bursts out from within your body
Blowing it up off of your hand like a bubble with one breath, and watching it float up into the sky before bursting into a trillion glittering specks that travel on to manifest your desire
Seeing it shoot as one strong beam of light from the top of your head out into the Universe
Any or all of these are work, and you can easily make up your own. Just make sure that whatever visualization you use makes you feel as thought you have released the energy effectively. Below is a link to a way of practicing directing energy: