After many months of reading on this site, I finally dedicated myself to Satan today, but there were a couple of issues in the ritual, and I don't know if I have to re-do it...

1) I don't have a car, so I had to Uber to the store to get candles. Unfortunately, I forgot the candles had to be black, red, or blue, so I got white ones, and realized I got the wrong color only after I got back home. I had already spent a lot of money on the Uber, so I hesitated to go back to the store again.

2) When I was burning the paper with my name signed in blood, the first candle went out before the paper had a chance to fully burn. I had to light a second candle and move the unburned half of the paper to the other one.

Do these issues make the ritual not void? If so, I can definitely go back and re-do the ritual with black/blue/red candles and ensure the paper burns all in one go this time. I did feel a sense of peace after I finished the ritual, though, so I'm not sure if it in fact did work.

As long as the blood was on the paper then it's all fine

It worked perfectly. It doesn't matter what kind of candle, I don't think candles are even necessary you can burn the paper however you want. All that really matters are your intentions, and those are obviously in the right place.