Re: how do i use a wine bottel or any other bottel as a base ?
Try a glass cutter! Cut the circumference of the bottle so it fit's your vase grommet PERFECTLY and then put some lighter fluid in the new lines and light it up! Now tap it off. Although even with this stupid and overly labor intensive process your stem will probably hit the bottom of the bottle.
PS: I don't know why I assumed wine bottles are safety glass but w/e