It's no secret that I adore the Handwriting Without Tears program, but I don't think the specific wording used in the program is the key to learning per se. Rather, I feel the consistency of whatever language the teacher chooses to use is the key. Just. Say. The. Same. Thing. Each. Time. and you'll be just fine.
One of the simple preschool and kindergarten games the HWT program recommends is called "mystery letters," where a teacher builds a letter on the board, step by step using the familiar language, and students try to guess what the letter is before it's complete (or complete their own at their table). For instructions from the Handwriting Without Tears Froggy Jump Gazette, go here.
Since we're homeschoolers, we changed this game up a little to increase the personalization and, well, the fun factor. :) A friend gave us a package of this Alex Amazing Paper, which changes color as you write on it. This neat-toy-turned-school-time-prop is effective because in order for the ink to change color on the paper a chemical reaction must occur, which takes a second or two, thus giving the student some extra time to process the information being given to them. Neat, huh? They have time to prcoess that the parent is telling them "big line down," and to consider what that means before the visual cue of a colored line shows up on the paper. The crowd-pleasing affects of this lesson on the under-6 set have absolutely nothing to do with the ink changing color, of course- the appeal is pure learning. *ahem*