Getting there H, although you might still have to do some sanding.
A fine filler can be made by mixing talc with an enamel or polyurethane gloss varnish, or light grey enamel paint. Mixing talc with Future looks like it's worked, but when fully dry, and especially after sanding, the Talc can fall out as dust!
A 'thicker' gloss varnish is required, in order to bind the Talc, and it should look like a sort of grey porridge !