Your off to a good start and are seeing the small oops or newbie booboos.
Here is a oh shoot moment I had. I drilled holes to allow epoxy to flow through the tang to both scales as a bright idea and accidentally drilled a pin hole in the scale.
Live and learn. Save the oops blades for learning from or modify the design and use as a shop knife or give to a responsable cousin or nephew/niece for their first knife. We all know kids will lose or ruin their first knife. Lol
A free and easy way to design a knife is to use a piece of cardboard as a pattern then use a wooden slat or a chunk off a pallet and then cut it and grind it like you would your steel and it will give you a physical idea of how it will look and feel.
When making your blades a simple rule is a min of .25 inches of steel below your index finger to keep from accidentally getting cut while using the knife.
If you have a dremel or a drill press you can create the smaller radius the hf sander is missing.
Keep at it and learn and move forward.
Btw hardened D2 is a serious pain to drill with out a carbide tipped bit and lots of patience and oil.
Sent from my SM-G930R4 using Tapatalk