I am very much new to woodworking and as such I am coming across the issue of hiding small errors. I once had a cabinetmaker tell me the difference between an experienced woodworker and a non-experienced is how well they hide their mistakes. I am trying to make up a picture frame and find myself with small gaps in the miter joints on the back side of the frame. These are roughly a 1/16" of an inch. I have Elmer's wood filler but I have also heard of people using saw dust and glue? Is one better than the other for lasting or hiding the mistake? How much glue to how much saw dust? Is there another solution, besides having more talent in the first place ?