I have literally no clue on how to finish the bottles:
WIP by ~d-R0 on deviantART

Just put the name of what they are. The nose and mouth could be darker so you can see them better. At first i looked wierd cause it didnt look like he had them lol But it could be my comp idk

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Draw like the cap and labels... search around on DA see if anybody else has vectored bottles or some other glass objects.

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Well, you have someone on dA helping you with the labels, so that could be ok. I am a bit unnerved by the overall image, because you look as though you should be wearing a trench coat and telling kids that you have free lemonade.

hahahaha
we don't take pictures of that silly