creating a transparent geoshell...how?

Upirium

I want to create a geoshell or something to add a patch ontop of a jacket

as seen here:

originally i was going to edit it straight onto the jacket itself but i did not like the fabric at all for the jacket. i was more pleased with a shader set i had.

however even making a png and putting just the patch on there is still this grey tint.

what do i do about this?

Gordig

Put an opacity map in the cutout opacity slot for that surface of the geoshell.