I have a lot of experience in making wine and my friends brew beer. So I have even more experience in consumption. The best think I can suggest is make sure your equipment is clean, very clean. The alcohol content will only reach about 12% then the yeast will die off. Any left over sugar will just make your wine sweeter not sparkle. The sparkling wine is make with a specific yeast. I have a few books that I will dig out if you would like. Anything else you would like to know just drop a line.