As describe in Tutorial 6, I try to change the Black triangularenemy object with Red triangular(that I create in Photoshop), BUT… I get white background behind my red triangular. My question is: How can I make the white background to disappear so we can see only my red triangular? (Please look at the attach screenshot).
Make sure your image is on a transparent background. Delete the background layer in photoshop, then export as png.
https://www.templatemonster.com/help/photoshop-how-to-make-image-transparent.html Photoshop. How to make image transparent