"Today I'm going to teach you a method I use to fake a fill flash. The objective is to lighten the dark areas without blowing out the highlights."
Can someone please clarify how to " Select the Flash Fill layer we created in the beginning, and fill the selection with white in the "fake fill flash tutorial? I'm new to Gimp and I'm not sure how to fill in the fill flash layer with white.
Select the layer (click on it) from your layers list.
Then, set your Foreground color (top color box) to White. Choose the Bucket Fill Tool (the bucket) then click on your canvas.
Does that help?