Blackberries, raspberries, a bunch of grapes - the instinct is to draw a bunch of circles, pressed up against other circles. What makes these fruits hard to draw is that they consist of spherical shapes crammed into a small space. They're overlapping, some in front, some behind, some squished next to one another. And all together, they form a big sphere-ish shape.

This was the result of my second take. The first version looked like a petridish with an overpopulation of cells.