I don't think you can rescue that splice job.
On your next attempt, draw a centerline on your billets, draw your splices very neatly on a piece of paper, both sides apposing on one piece of paper, cut out your patterns and glue them to your billets lining them up with the center lines. I use white elmer's school glue to glue on the patterns.
In this case I am adding a new limb to a finished bow after a limb failure.
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This is before I started the splice, you can see my pattern in the background.
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Pretty good fit;
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