Additionally with this image where I have circled red, with this tree, you know how there is a lot of variations with its colour around the tree? Is it possible to achieve this without doing any UV texturiing and this can be achieved easily (or using some automation tool or something)? Maybe while colouring the colour randomly slightly varies or something as I am colouring the object?
You can use gimp or something to make your own 2d “sprites”. Is this for a game because if it is, you can use planes then like you said, uv unwrap. Or you make a 3d game, then use ThaTimster’s post-processing addon and use the toon 2d filter from the addon., or use can use those images, then trace over it ith the colors, I am not a v2.9 user, i only use 2.79, and 2.83
Umm, you can, but u need to make the textures themselves. Take the textures, make sure they have a uv channel, put them then unwrap them onto a plane then under the texture option enable alpha, go to the material tab go to transparency enable it and drag the alpha all the way down, then go up and click shadeless.