My custom sword from the Isle of Skye

[MacMillan of Rathdown]

About the arms:

Set as they are on a "cartouche" it is hard to tell just what the gold bit surrounding the shield is supposed to represent. Looking at the arms in the pommel the gold line seems too thin to be a mark of cadency-- perhaps it is merely a fimbration added to help unify the design.

The convention in British heraldry is to use the livery colours for both the mantling and the wreath; red and white mantling is often the default used by heralds when the liveries would take away from the overall design. When that happens the livery colours should be named in the blazon and depicted on the exemplification.

Generally speaking the helmet rests directly on the shield-- the exceptions being when a cap of maintenance or a coronet of rank is placed on the shield, then the helmet "issues" from that devise. The torse sits on top of the helmet, immediately below the crest. It's original purpose was to hide, and to some degree protect, the laces that secured the crest to the helmet.

I agree with MacLowlife that a simple presentation of the arms would be better, especially as the arms in the pommel of the sword do not appear to be hatched to show their true colours.

Since the arms are: per fess sable and argent a lion rampant counterchanged, (the whole fimbriated or?) I would suggest that you consider going with red and white mantling to avoid making the achievement look "washed out".