This is were it gets confusing with you as your end product doesn't really justify giving out advice like this but here goes
To maintain an edge I use these
EZE-Lap Diamond Sharpener Hone & Stone 3 Pc Set Super Fine, Fine & Medium
To get an edge I use this [Thanks to Beachcricket to introducing me to workshop heaven]
http://www.workshopheaven.com/tools/3M_Imperial_Lapping_Film_PSA_Sample_Pack.htmlbuy the pack and stick them down yourself on something flat....
If you are really stuck pop to a Carpenter a few quid to sharped them for you... and you just maintain the edge after that....
For the drawknife I hold it between my shoulder and hand and run files up and down.... and like jonners says flatten the back but you flatten the back on all tools...