First of 3, this 7 minute film explains the tools you need to make a Greenland paddle. Spokeshave, rasp, sandpaper, knife and drawing tools. Tools for this project can be bought here:
https://www.yourvismawebsite.com/kajakkspesialisten-as-1/lang-EN/kayakbuilding-paddlemaking-diy/tools
..But you can also use what you have or borrow :)