Writing and outlining may be easier and more effective with our "paint pens". 

We have the same paint colours in small bottles with very fine nibs (a very narrow tube) which make it easier to write or outline anything on your ceramics.  It is a bit like cake icing in that you need to apply a little constant pressure on the bottle as you use it, rather than squeeze, and apply it to the surface rather than drag the nib along the surface.  The nibs are so fine that they will block easily with either paint of ceramic dust if they dragged along the surface but don't panic, just ask and we will unblock them for you.  There is no need to layer the paint from the writing pens - one coat will be sufficient.