Converting PNG to IWI More Qualitatively

Hi, I can not convert an image to IWI more Qualitatively, other pictures get well but than this, and i do not know why, tried all the options for compression+
converting to smart object. Please look at screen:

Spoiler:

Attachment 1489

Spoiler:

Attachment 1490

I use Easy2Convert PNG to DDS and DDS to IWI Converter (Final)

Can anyone convert to IWI more qualitatively, please ? or prompt

This is original PSD: Attachment 1491

But here it shows normally:

Spoiler:

Attachment 1496

See the attachment.

I have included the DDS file, the .PSD file, and a converted IWI file.

When making an image for Call of Duty, you must have a solid color background. To see the actual image, you have to use an alpha channel.

Much better, thanks!

Got it, i will be use alpha channel.