What size should my artwork for the candle jar be?
For the 200 g size, the print-ready layout is 3048 × 898 px at 300 dpi (258 × 76 mm with bleed). Upload one picture for the whole layout or one for each side; the editor shows each side's size.
Which materials can I preview the candle jar in?
Clear glass, Amber glass. Switch between them on this page and in the 3D editor; your artwork and the print PDF stay the same.