Good job. The free flight rubber power community has been making their own props for years. It would be too long winded for me to provide a tutorial on the subject, but you could search for appropriate articles. For years these modelers carved their own props. Then they developed ways to wrap balsa sheet around cylindrical objects to make propeller blades. I've even made fiberglass, and carbon fiber blades. Great prop blades can be made from foam hot drink cups. There is a lot involved, but it's not rocket science. you will need to understand helical pitch, and how to achieve it by angling the prop blanks approximately 15 degrees on the mandrel. It's hard to tell from your picture, but it doesn't look like your prop blades change pitch from the root to the tip, or true helical pitch?