Working towards my still life of natural objects

These are the latest drawings I have done, working up to the assignment of a still life.  I tried several different compositions and then added a little colour.  I think I am just playing around at the moment trying to find an idea that actually works.  As it takes me so long to draw anything, I am constantly having to move my tray of rapidly fading vegetables around the house so they are not in the way. No two drawings are ever going to be the same. Oh, to have a study!