You mean the shine? I actually came across a way to adjust that, but it's a bit complex and it can't affect the overall shine because the game still takes into account the brightness and colors of the print, so there will still be parts that are brighter or darker than others, but for parts of the print that are blank, you can actually control the shine on those
You'll need
VTF Edit, and Photoshop, Gimp, or whatever program can save TGA files with an alpha channel
When you've made your print, make a blank layer below that and make it any opaque shade from white to black, the brightness of this layer will affect the shine amount
Next you duplicate your print's layer, and merge your print's original layer to the shade layer below it
If you're using Photoshop, you can double click the duplicated print layer and apply a white color overlay to it, then make a layer below this one and make it black, then merge the duplicated layer with the black layer, this will be the alpha channel
With your would-be alpha channel visible, press Ctrl + A to select the whole image, Ctrl + C to copy it to the clipboard, then delete the layer
In the Layers tray, click the Channels tab and create a new channel, it will automatically be called Alpha 1, while the whole image is still selected and you have the Alpha 1 channel selected, press Ctrl + V to paste the black and white image into the alpha channel
Your image's RGB and alpha channels should now look like this
Note: I had to do a few extra steps because my print uses the brickSIDE texture, if you want to know how to that, i could make it into a separate tutorial as to not clutter this one up
Once that's all set up, save your image anywhere as a TGA with the alpha channel option checked
Then open up VTF Edit and press Ctrl + I to import an image, go to your TGA file and open it, you'll then be shown the VTF Options menu, make sure your import options look exactly like this
Once your image has been imported, optionally, you can press Ctrl + Shift + A to view the alpha channel and Ctrl + Shift + C to view the RGB channel to see if they're both intact, then press Ctrl + E to export your image and change the 'Save as type' to PNG, then just save your image and put it in your 'prints' folder
You don't need to do any of this for the icon as it's not gonna matter, so just make the icon as you normally would
Your print should then look like the one on the left
Note: The one drawback of doing this is that you'll end up with subtle white or black outlines on your print
