Bottle glass

I love the glass bottles that sit on the window ledge here at the farm. I hesitate to paint them though, I can never seem to draw them symmetrically. But I decided to try today, on another sheet of 6x8 Art Spectrum. But as I suspected the bottles came out all lopsided and asymmetric.

Too late I recalled the advice of one art teacher - fold a piece of paper in half, draw half the bottle, then cut it out, open it up, and you have a perfect symmetrical shape. However I forgot that advice until after I'd already painted my lumpy shapes. Oh well, as the same teacher also said "If your bottles come out uneven just tell people it's hand-blown glass." LOL