Sorry, I don't currently have one! But you'll want to use a drawing program that supports PSD files, GIMP is a free one you can use. Though, it does require some basic knowledge in whatever program you end up using
Essentially though, the file is split into folders and layers for the different expressions.
You'll want to recolor the two "BaseColor" layers in the two bottom folders, and then enable the layer featuring the expression you want.
Then you export it as a PNG file, and replace the matching expression in veadotube mini. There should be quite a few tutorials online on how to do the veadotube part at least.