Go toMenu>Inserttoimport the 2D picture onto the canvas.

We’ll do this one component at a time.

Once the image has been traced, drag it off to the side to build the 3D model.

A rainbow on a white canvas in Paint 3D

you could do fine-tune adjustments later.

For now, we just want the different parts of the 3D model to exist off to the side.

In theBrushesmenu are several tools that let you paint and draw directly onto the model.

A 3D rainbow next to a 2D rainbow in Paint 3D

TheEyedroppertool below the drawing utensils is for identifying a color from the canvas.

Use the same method to adjust your 3D model to make it more life-like.

Just useSelectto pick an item you want to move.

Color options for a rainbow in Paint 3D

Paint 3D supports exporting to GLB and 3MF files.

A rainbow arranged in 3D space in Paint 3D

A 3D rainbow being cropped from the canvas in Paint 3D