Fixing this is part of the learning process.
I dont see a recurve but I see that the heel is taller. If you bring in the heel, it will be flat again.
I'm NOT a professional sharpener, and am significantly less experienced than some on this forum, however I've remedied this a time or two.
By hand, its easier to remove stock in precise amounts from specific locations if you're not trying to hold the angle while doing so.
Using a course stone, I've just held the knife near to 90 degrees from the stone, got my eyes level with the stone surface, and paid very close attention to exactly which part of the blade I was hitting.... constantly checking height and angle to make sure I wasn't grinding the wrong spot.
If your going to attempt this, I highly recommend using a sharpie and straight edge to mark off where exactly to stop. You really dont have to take off much, and its probably much less than you think.
I would start just flattening the edge a little bit right at the point of the heel, just a little bit... re-apex the heel and see where you're at. Repeat as needed.