Oh.. you do want to use coloured (off white? ) paper.
On the basis that there is (usually) no white ink used in CMYK printing ane white = no ink / transparent
Remove the white component from the image. Add alpha channel to image / color-to-alpha using white as the colour.
Gives something like this: https://imgur.com/uRCZqM0.jpg
For a print simulation put a colour layer under. example using pink
https://imgur.com/66ivHG2.jpg Might not be exact, printing is complex procedure.
On the basis that there is (usually) no white ink used in CMYK printing ane white = no ink / transparent
Remove the white component from the image. Add alpha channel to image / color-to-alpha using white as the colour.
Gives something like this: https://imgur.com/uRCZqM0.jpg
For a print simulation put a colour layer under. example using pink
https://imgur.com/66ivHG2.jpg Might not be exact, printing is complex procedure.