You can texture a bottle 3D model without expensive studios using free software (Blender for UV unwrapping, GIMP/Photopea for editing) and real-world photos or free online textures.
First, UV-unwrap the bottle in Blender to map where textures will apply. Then, use photos of a real bottle (or free assets from sites like Textures.com’s free tier) to add labels, glass transparency, or surface wear—adjust brightness/contrast in GIMP/Photopea to match materials like glossy glass or matte plastic.
Preview the texture in Blender’s viewport to tweak light interaction, ensuring a realistic finish without costly tools.