Dearie, your karma cannot be removed – it is a universal principal.
You can literally cleanse your auric field however, yourself. Try burning palo santo wood, and leading a healthy lifestyle. I promise you that no curse is too big to be removed by yourself. Only people wanting to fool you suggest otherwise, believe me!
I can send some positive energy, but really you need to make yourself a match to it in order to receive it. I suggest meditating, and doing creative things (even singing in the shower!) that make you happy. Happiness is a signal of a high frequency.
Love and light
Xx