My kids all love to draw, as long as the subject matter is their choice. Drawing is a significant part of my school curriculum, especially in the younger years, and my children always resist the drawing assignments. It's not so much fun to draw what somebody else wants you to draw. (Can't say I blame them. I enjoy writing, but assign me a topic, and I will procrastinate and complain as though it is near torture.)
Usually, the children opt to copy a picture, because it helps to have someone else's vision for what to do. That's if they like the picture. But if they don't feel comfortable drawing sheep, for example, and the Bible picture or Aesop's fable or poem illustration shows sheep, my little students will dig in their heels and insist that the assignment is too hard. Fortunately, by 2nd grade, they get over this, generally because they now have 2 more years of experience in drawing.
Also, fortunately, if you are the 5th student and your mother has kept all the drawings (done in bound blank books) that your older siblings have done, you have a wide variety of illustrations to peruse until your muse inspires you. At the very least, it helps to know that they too had to do the same work and they managed, somehow.
I knew there was a reason I kept that shelf full of drawings.