It is completely counterproductive to your goals of looking better as a start. Then there are all the health effects that both will have. It is best to just avoid alcohol all together on cycle. If you cant do that then it is probably best to not run steroids.
A glass of wine here and there is no problem but the less alcohol you consume - the better. Alcohol is high in calories, catabolic and estrogenic. It's pretty much the worst thing you can possibly consume if you care about your physique