Find a picture, Screenshot, Photoshop,

Goto https://11qazxc.github.io/SPRASTER.html/

In SP, select Label

open part properties.

open the text box by hitting the pencil.

Now paste into that box while it is highlighted.

Now if you do not see the image or the image is messy, open overload and change to label tab. At this time if you feel laggy, you can restart and lower the horizontal pixel number.

Now you need to make the sticker fit the picture. Using width and height.

You might/will need to do this multiple times to get the proper fit. too big and it is constantly getting moved in the builder, too small and you get a messed up pic/stick/label.

You can resize, using Overload or finer tuner, Though If you plan on curving the sticker, the font size needs to be high and then resize down in OL, part tab, i.e. scale 0.2,0.2,0.2