Game Development Reference
Click on Resize . You now have six concrete slabs at the top of the image, and room
for six more as shown next:
Go to File ¦ Open as Layers . Select the other texture you downloaded. This now
opens in its own layer.
Select the Move tool and drag the new texture into place so that it fits below the
previous one. You should have something like the one following:
While you have the Move tool selected, you can also tap the arrow
keys on your keyboard to move a layer by single pixel increments.
Click on the uppermost layer in the Layer pallet and right-click. Select Add Layer
Mask . If using a Mac, go to Layer ¦ Mask ¦ Add Layer Mask .