How should I set the Photoshop to create .tga textures?

[Layback_]

Hi all,

I'm totally noob on Photoshop and just followed what it has been stated by others.

So, I've set the color mode to RGB color (8-bit) with transparent background and the size was 64x64.

However, when I apply this on a frame, it also draws all the empty spots with white color.
(Please refer to the attachment!)

Am I missing any point?