Adding a new sky

…Now that the landscape image is looking more like an actual night scene,…it's time to bring in the new sky as a layer, and…use the alpha channel from the sky selection that we made earlier to create…a layer mask to only show that new sky layer where we want it.…Now one thing you need to consider when you're bringing together images for…a composite where they're supposed to be the same width, or…a similar width is you need to double check, what the actual pixel width of…the image is, to see if you need to make any adjustments.…Now for this one here, this is actually a composite of.…

Two files and although there was some overlap between them it's possible that…this one's going to be too large.…So, one way you can check the image size is of course to come up to the image size…dialogue in the image menu, and you can see it here, about 6,200 pixels.…Another shortcut you can do is if you come down to the little status bar here,…where it is showing the document size, you can just click and hold there and…a little pop-up will appear and you can see the pixel dimensions there.…