Hey there nice work. When I do my rough forging I forge my point first then decide which side is going to be blade. Then I put a downward counterbend. I use two sections of pipe, lay the knife blade up and strike it lightly to make the counter bend. As i'm forging the bevels it tends to return to straight, as it is doing this that's when I start to work the distal taper from the spine. I find that I can control the straightness somewhat. Hope you understand what I meant by that......LOL.
I am self taught, so some of the guys with more skills may have more insight! This works for me...may not for you! Cheers and happy smithing. Don't forget to make many more! :)