I am a firm believer that spells should be customized to fit one's individual needs. You don't need special magickal implements. A candle from the Dollar Store works just as good as a much more expensive New Age shop. It is all setting your intentions. The magick isn't in the candle, it is inside yourself. The candle, or any other prop, is just a way to channel and strengthen your magick.
With that said...
If you are wanting to cast a success spell, I believe a star shaped candle is your best option. My human just happened to find a pack for three star shaped candles at a 1/2 off Goodwill sale that we used for the spell that found her the perfect job.
If you aren't able to find a star shaped candle I might also suggest a star shaped holder. These pretty Himalayan tee light holders are very nice. Himalayan candle holders offer another benefit of purifying and ionizing the air. We keep a Himalayan lamp burning all the time in the living room and the human has two Himalayan candle holders in her bathroom that are beneficial to use when taking an Epsom salt soak. Something any witch should do at least 3-4 times a week. The human particularly likes Dr. Teal's Chamomile.
Now back to the spell...
Find a comfortable location where you can sit quietly and visualize your intentions while holding that candle. Holding the candle allows you to pour your energy into the candle and strengthens the candle's potency.
After having a clear idea of what you want, write this down on an index card.
Then place the card under your candle and light it while visualizing your intentions once again.
Let the candle burn until the wax covers the card and leave the card on a windowsill until you get your results.
The human did this spell on a Monday right before applying to a job she found of interest.
The next day she got a phone call to schedule the interview.
The day after the interview she was offered the job.
So, there you have it... a simple and easy spell to attain success.
And so it is...
And so it shall be...