I visited a local drum factory in Dakar, Senegal. I made this instructable of the process that I saw.
However, this is not a step by step instructable but it will give you a general idea and almost all the steps to make a drum as they do in Senegal.
some welding required
wood sanding tools
varnish ( lighter and darker preferred)
Step 3: Example
Step 5: Sanding the shape
Very smooth and the circular edges are well made.
Step 6: Varnish
Step 7: Paint and then sand it again
sometimes you can paint it and then sand it again to make your desired color.
Step 8: Drawings
Step 9: Making the drawings
Step 10: The leather
Step 11: Removing the leather's hair
it is totally up to you if you want to leave hair on the edges for decoration, however it will affect the sounds of your drums.