Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
What version of Imagemagick and what platform? Please always provide that information.
Reset your -gravity before the next composite, unless your geometry coordinates are center relative and not upper left relative. I have done it here twice, thought only one time is really needed.