I am trying to do the final touches on a house I am designing. I can't figure out how to put an arch in the ceiling of the front porch, the section above the triple-arched window. Also, I have a enclosed porch on the back of the house. I am having trouble getting the siding to line up where it meets the brick and to get a terrain under it. Please see attached for the file. Any help or any other suggestions would be greatly appreciated.