Proofed on several fabrics as shown in the thumbnails under the preview (and in the comments below): cotton-silk gives the best shine with slightly lighter colors; cotton sateen has the most intense colors, but it prints well on the knit too. A larger scale version is here.
Metallic oil and palette knife. Basic repeat.
[Currently set @ Fabric: 300 ppi, Wallpaper: 176, Gift wrap: 150 ppi]