Fixing an Old Chair

I have been working on a chair for someone who spends her summers here on Prince Edward Island. The chair belonged to her grandmother and doesn't have "antique" value but does have sentimental value.  Apparently my customer's previous dog didn't know that because he chewed on the arms. Here's one:
So I bought some maple and traced the two arms on it and then cut them out with my jigsaw. (The notch at the back is to hold a cross piece that the back of the seat rests against.)
The previous photo, as well as the next one shows the two arms back to back and stuck together with carpet tape. That helped me to get them the same shape and then I could round off the top edges on my router.
I then had to drill holes for the screws and still need to make some plugs to cover the screw heads.  What I'm working on right now is wood slats on the bottom to replace the old springs and metal straps under the seat cushion area.  Then I have to prime and paint the whole chair. The customer has decided on a bright green.    
 I'll post more later when I get further along.