Study the basics, there is nothing worse than feeling like you don't know anything. Spells work, but it takes time. Here's a few question's for you to ask yourself!
*What kind of spell are your trying to do? (Fantasy, and other mythological spells can't, and will never ever work!)
* Is your spell needed, or necassary?
* Do you know what the spell is fully ganna do, are you able to be prepared for the actions that will come?
Ask yourself, and Learn the basic's. This will help, magic is not easily done, it takes skill, and belief. It won't happen love night, it may even take weeks.