General advice sought
I may soon find myself in the position of wanting to construct a medium-easy (as in, not harder than a NYT Weds) crossword in which some words need to have letters removed before being entered in the grid, the removed letters spelling out a secret message. Never having made a serious attempt to construct even a normal grid, I'm not sure how tough a job this will be. Any advice, procedural tips, etc. from those in the know?