Okay say you want to do a spell and the first thing you do is google up the spell you want to do. Well don't stop there. What you want to do is research as many similar spells to it as you can, pull out the things that appeal to you and use them to embellish YOUR spell.
It is important that you make any spell you do YOUR spell. What I mean by that is that you have to tweak it until it 1.) fits your need 2.) feels right to you.
You have to put alot of yourself into a spell to empower it to work the magick for you.
Often times the spells you'll find on the web, you'll find that you don't have the ingredients for, or they just don't seem right to you. Which is OK because every person is unique and what works for some doesn't necessarily work for all.
The MOST important ingredients in any spell are a touch of personalization by you and YOUR BELIEF that it will work