You say your new yet you say you have been casting for 3 years? Kind of confusing to be honest. I have one question for you and that is have you learn all the basics? Also do you have any self doubt about your work working? Those 2 things will keep your spells from not working. I have posted the basics just in case you have not learned them.
The basics Tools,Meditation, Visualization, Moon Phases, Colors, Days, grounding and centering, power flow, Elements, circle casting, Charkas
This link is for the Basics