Alpha transperency textures

So this is more for you Bob but you can all read along.

This is the fix the professor showed us for the textures

1. Click on the channel layers
2. Hold down ctrl and click on the alpha channel layer
3. Return to the original layer and add a new layer
4. In the new layer, use the paint bucket to fill in the shape with the color you want or are using currently
5. Make the original layer invisible
6. Save as a PNG file and make sure you choose interlaced when asked

So that should make things transparent when you import it into unity
Not sure if for new textures we just have to delete the background and save as PNG and that'll make the alpha channel automatically but we'll cross that bridge when we get to it.