This is one of the conversions I have done to allow my Crimean War Scot's Regiments to have mounted officers.
It is my usual head swap method shown elsewhere in the blog. Highland Officer's head on the mounted British Officer's body and some 'greenstuff' for the tartan shoulder roll (I am sure this probably has a correct terms, so my apologies in advance). The boot 'line' is shaved away to allow for trews.
John Cunningham now has this figure available as part of the Recast Crimean War S range