Less than 1 week –
Less than 10 hrs/week –
This work is suited to someone who has can create visually appealing thumbnails that get noticed on youtube, as well as implementing clickable annotations over graphics that have already been completed.
For examples of thumbnails look at the 2 following channels
You must know what the perfect thumbnail size is for yoyutube, and so that the whole picture fits perfectly in shot. No black borders etc ...