I use a 'P-touch' labeler... Waterproof and graphics are importable on at least a limited basis... I just, basically, use a format that shows: Name of
juice, ratios if there's space, date made, and for whom... No graphic, though I have been considering adding one... At the present my DIY is for my wife and my personal consumption so fancy isn't really a consideration...
I'm with you on the P-Touch label maker - LOVE mine! I can well do without the graphics and (normally) unintelligible maker's name that is part of the graphics. These aren't 'business cards' (size-wise) - just needed info - IF we like them, we want to find the makers 'easily' !(have run into this when trading juices)
Also, when juice hits the label, no ink is lost or smeared! These are also re-positional as well - without leaving any sticky behind.
I don't like receiving 'samples' in larger 15ml bottles where they wrapped the WHOLE bottle in their big label - I can't see the level of the liquid!! Did they use that larger bottle (1/2 full) cuz their label won't fit on a 3 to 6ml or even a 10ml bottle??? ie, did they send me a full bottle's worth?? is 1st question in my mind (cuz it looks like they are hiding something). I also don't like cheap paper topped labels that 'go south' when juice hits them / also they are NOT repositionable to a smaller bottle or one of my choosing.
Thus my preference for my own P-Touch label maker - single or double line, Caps and/or small letters, numbers, symbols, choice of vertical or horizontal printing, color choices in tape, as well as size/width of tape, and 4 or 5 sizes of type, the list goes on with their capabilities!! had one for years and used it MANY times! ok, done with my little 'rant' - haha but definitely things to keep in mind if your labels are being used 'for others' reference of all the basic info needed (well, perhaps not the warnings, nor graphics or pictures)...
just these: Maker's name or website, name of juice, Nicotine level/%/mg, PG/VG%, amount of flavors added (high/lo/%/ml), date made.... etc. however you want to specify it's contents basically, but include all of this short list (somehow) on the labels.
added: please tell us the ml/size of the bottles used also - so many dif. shapes, drip tip tops and caps! ie, if I combine your flavor with my tobacco mix, will it fit?
ok, that's my 2cents worth (I found a website discussion telling the makers of juice what they'd like to see on the labels, but it was closed, so I couldn't add my 2 cents worth there - rats!) so my apologies if this doesn't 'fit' in the realm of answers you were looking for.