How can I make it more clear?

Hi guys,

I'm a little irritated as a result of the lack of direction clients are giving me. I do whiteboard animations for the most part, and have CLEARLY said that you, as a client, need to show me SPECIFICALLY where you want the images placed in the animation. I have had many clients order, send me a bunch of image files and presume I know where they want them placed. If I just chuck them in random spots or simply exclude them from the animation, of course I have to redo it, wasting my time. Upon ordering, I have even written:

IF YOU HAVE IMAGES TELL ME WHERE YOU WANT THEM PLACED - I CAN'T STRESS THIS ENOUGH!

and yet people STILL cannot give me specific directions. I just get around 10 random images which mean nothing to me, and am expected to produce a top quality video with literally no clue what to do with the images. I have had to spend several days just to explain to clients that they need to be specific, and yet they STILL don't modify the script specifying where they want the images placed.

Unfortunately I don't possess the skill where I have the ability to presume things for clients.