Fixing a warp without Forging experience?

[Owl]

The 12 inch knife I am making as a slight bow in it. Lying flat there is probably a 1/16 maybe am 1/8 inch space under the center when placed on a flat service , my table saw. I have a kiln , I have a vice, I don’t have an anvil. I have a sledge. I would like to get it flat before
I start the bevel. Any suggestions ?

Mark, I have had some luck straightening mildly warped blades using a peening hammer with a 1/4" carbide insert in the head.
You just put the blade on an anvil and hammer lightly in the concave part of the warp. That side of the blade expands a bit and flattens out the warp.
It does leave some shallow marks in the blade that you have to grind out, but it only takes a couple minutes.
I do it after tempering if the warp is not removed during that step.