I recently had an order to make a 3D grey goose bottle. I had ever done it before. I used a central pole for support and dowels in between. I stacked and carved the cake, iced and froze until just form. I rolled out fondant to just the right size then laid the cake down and rolled the fondant around it. Then out the cake back on the pole. It wasn't as smooth and clean as I would have liked it to be. Anyone have a better way?? Instructions?

I've tried to attach a picture, but it thinks it's an adult cake lol.

I just did a 3D bottle cake this weekend and had the same procedure as you up until the fondant part. I left mine standing (center dowel hammered into the extra deep cake board underneath) and covered it that way. Rectangle piece of fondant set at the front first, wrapped around to the back, pinched closed, cut with scissors, smoothed out, bottom and top trimmed. Yes it leaves a seam, but there's no way around that. At least you don't have the extra handling on the front side from moving around the covered cake.