Make or Do? The One Question That Decides

Your friend bakes you a beautiful birthday cake! You want to thank her, so you say, thanks for doing this cake. She smiles... but it sounds a little strange. Here's the reason. Make is for creating something new. Do is for tasks, jobs and activities. Before the cake, there was no cake. So you make it! Now, what about your homework? Nothing new appears. It's just a job on your list. So you do your homework, and you do the dishes. Wait... make a mistake? Really? Yes! A mistake is something new that you create. Oops! Now there's a mistake that wasn't there before. So next time, ask one quick question. At the end, is there something new? If yes, make. If no, do. Now make a sentence, and do it out loud!