I am due this July also. My school has an art sub planned for me. However,
the general policy is, if you are on leave, then that is exactly the case-
the sub should be the one doing the plans. You might give them a copy of your
curriculum guidelines- maybe give them some clue about things to cover. This
is just how things are handled where I work in Binghamton, NY.
Some starters- contour drawing- still life and figure. Blind contour. One
Hope this helps.
Christine in Binghamotn