If you have never done a candle it is easy peasy you should give it a try.
I simply adhered some tissue paper to card stock and printed then colored my image. Trimed close to my image then, very carefully peeled the image off of the card stock and placed it on my candle. Placed a piece of wax paper paper over the image and heated with my heat gun for just a few seconds peeled off the wax paper and done. I embellished a bit done.