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Looks great!

Adding wood glue before sanding doesn't really reduce the burr, but it does fill in any gaps around the wire and hopefully help keep the wire in place if you get too heavy handed...

For transferring the designs, I use a needle and poke through the pattern into the wood about every 1/16 of an inch. Then I join the dots on the wood with pencil (white pencil if on dark wood).

It does look good.
Wire inlay is a PITA to do. I usually have to do about 10 repetitions on scrap before doing the real inlay. Very sharp, fine blades are necessary. And strop the blade often.