Your tire is angled quite a bit up in that photo, so if you tipped the photo to correctly match the template, the boat tail would stick out above the template. I'm not trying to put you down; it's just that these angles are kind of sensitive and you have to be very careful when setting it up!
When I was building my boat tail ("Anal Probe" project on EM), others suggested a 10 degree taper on the sides. It would be worth some searching on your own to verify, but 7 degrees likely leaves some fruit on the tree.
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He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
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