[Crex]

Do you have a way of regulating the heat in your forge? If not you will really have to pay close attention to how the decalesence moves through your blade as it transforms. If your blade is directly in contact with your torch flame you are going to have to constantly move your blade as Doug has stated in order to have this transformation occur evenly throughout the blade. Blade geometry plays a big roll in how this occurs as it heats up.
Yes, your grain growth is too large. I'm pretty sure someone posted comparative pictures on this forum a while back. I think you would find them and the explanations that accompany them very helpful.
80crv2 is very good blade steel and when you get the "recipe" right you should get much finer, velvet looking grain structure.
Don't get discouraged, you are learning from this. When you get it right it will all seem much simpler and you can get on with the next level.