Take a photo of your card test model after you have stuck it onto black card and trimmed it and add it to Procreate.
Create a new layer so that you can blend in and extend the background effect.
The Spraypaint - Flicks brush with a medium opacity setting works best to blend your colours. Dont forget to colour match the greys and blacks but holding your finger on th colour you want to match.
Add text to your poster that describe tyour work. Are your pleased with it? what sort of people will like it? Where will this be used? How could you make it better? What was difficult? How do you think the 3D printer could make this or what problems might you have when building a 3D model?