I completely understand your concern. I had similar doubts when I was new and even considered performing the ritual a second time as well. However, I can assure you with absolute certainty that your dedication ritual was entirely successful!
There is no need to do it a second time. Although, no harm will be done if you decide to do it a second time. Satan is understanding and knows you completely, your entire being - He may have even guided you here to reassure you of your dedication.
Congratulations and welcome to our Spiritual Satanic Family!