This is a painting I began yesterday afternoon, then worked nearly all day today and it's very wet still.  I just couldn't go on as all the colors were mixing too much.  Oh how I wanted to get on with this, but I got overly anxious and didn't thin the paint toward the end of the day and hence I now need to wait for it to get tacky.  Couple of days should do it though lately I have had some trouble with paint staying wet way too long!