Good editing does not come quickly or easily, and usually several different editing sessions are needed to trim away unnecessary clips that made it past the storyboard cutting stages. It is during the editing process that you can begin to see if all the elements we just discussed have come together. If not, back up, rework, and try again. Often, during the editing process, sound is added as an afterthought. However, sound is so important that it really deserves its own mention and category step.
Animations work best when there is a clear concept of sound from the beginning of the project.
Sound can help dictate motions, timing, and feeling. Take some time to create a sound design. Be careful not to just use stock sounds over the top of a creation. Putting stock sound over the top of a meticulously created 3D animation that took you weeks or months to painstakingly and lovingly create is like buying the whitest flour from Nebraska, the finest cocoa-beans from South America, the purest sugar from Hawaii, and then getting water from the gutter to make a cake. The biggest issue for many computer artists is the lack of outside feedback and influence.