Well done andy, cut and paste is far easier than tapping away at keys lol
If its a frost like the ones on axeminster tools i use a course sharpening stone to grind the back flattish as its got a nasty secondary bevel ridge on the back which makes it difficult to sharpen takes a bit of elbow grease that bit, be sure to keep away from the cutting edge though, then i fine tune the back of the knife with a medium ceramic stone then a fine, im into ceramic at the mo but any stone is fine, u can use whatever you have got really
then i work on the inside of the crook with a little rounded slip stone to polish it to a good edge if you havent got one wet and dry stuck on a wooden dowel will do, then i use a piece of leather with some honing compound and polish it to a razor sharp edge inside and out or an old belt and some autosol chrome polish will do just as well ,takes a while but once you have ground it to your liking and honed it up well its much easier to keep sharp
then during use use the leather and honing compound to keep it sharp.