this is surprisingly difficult
the form, and filial, work really well, and the elm and oil work with the form as well as looking stunning.
I don't like the aluminum filler here because of the filial. What seems like a match ends up a poor contrast because of the texture of the filial cannot be matched by the filler. If you agree you might try matting the filial with abrasive to match the filler? I don't think it will work though because the filler will still not match.
I echo the earlier comments re the silver gilt cream here, rather than enhancing the wood grain it rather muddies it. Again it appears to have/add a slightly matt effect. The elm already has a lot of detail in terms of colour and grain patterns, so here it's a step too far. Had you ebonised the wood such that we had a simple contrast and the gilt cream gave us back the grain pattern, then I think it would have worked (but been a waste of the elm's beauty!)
I took the liberty of downloading your image in order to be able to see how the various elements actually interact, and, for me, it's the filler that doesn't work. If you are happy for me to post a 'doctored' image to illustrate what I see I can do so. I would say that there's no easy option because I tried any number of 'fillers' before eventually cheating and using 'elm'. In practice black would probably be the best option. The silver gilt does seem to work in the absence of the filler.