A drawing round has little time. Put the main noun and action on the canvas before adding the funny detail. A recognizable stick figure handing over an object conveys more than a polished background without a clear subject.
Use large shapes and contrast so the next player can interpret the scene at a glance. If labels are allowed in your group's rules, use them sparingly; if not, exaggerate the action instead. The fun comes from reinterpretation, but the chain needs enough signal to continue.
Do not spend the whole round refining one corner of the image.