A profile plate helps to reduces glare, eyestrain and blocks out the busy background on the tying bench. The plate is also perfect for providing a plain background for photographing your flies.
But they can cost $$$ depending on the vise manufacturer
So here is my cheaper alternative
I bought a typists document holder for $5 + free shipping
Insert a 39 cent piece of your favorite color craft/scrapbooking paper in the holder
Then place it behind your vise to block out the mess and clutter on your bench and you'll see what youre tying much better
Please note: this is just one way of making a profile plate. There are many more clever and elaborate ways of making one
Thanks for looking