I use vignettes on the majority of my images, but I often use a couple of simple tricks to get much better results. One of these tricks lets you create a stronger vignette in a beautiful way, and the other enhances the quality of the vignette significantly. Learn how in this tutorial.
Learn more about Lumenzia at: https://gregbenzphotography.com/lumenzia
See the written version of this tutorial at https://gregbenzphotography.com/photography-tips/a-simple-trick-to-make-beautiful-vignettes-in-photoshop