You might watch a few of the bow making videos on youtube before you attempt another bow, seeing as how you think that walking stick is a potential bow you have a lot to learn.
Trying to turn that piece of wood into a bow will be a total waste of your time. I make walking sticks from barber pole saplings and found they are full of bark inclusions and punky wood.
If you don't want to go with board bow route you will have to collect some actual bow stave wood and have a go at it. I do think a board bow would be your best option, you will have to learn how to pick a suitable board, very few are of bow quality.
Make yourself a tillering gizmo, google it and plenty of info will come up, it will tell you where to remove wood to get a perfect arc in your bending limbs.
You wouldn't happen to be a young guy?
Here is a gizmo;