You should try and use script manager to change icons,overwriting base files can usually lead to some weird mod conflicts (not saying there are any,just for us folks that use a lot of mods)

Create a *.Lua file inside Media\lua\shared (or client)

and then add the lines for changing the icons of all the things you need

function Adjust(Name, Property, Value)
Item = ScriptManager.instance:getItem(Name)
Item:DoParam(Property.." = "..Value)
end

Adjust("Base.BreadKnife","Icon","BreadKnife")


This way no conflicts will occur if some other mod messes with say Bread Knife item (durability for example)

anyways great little mod!