As with the essays, I encourage you to first write each section with reckless abandon. Most students write blandly in this section, making this a lost opportunity to make yourself memorable. This is one more place in the application where the admissions committee can judge writing and communication skills.
We then edit down to the most important and impressive information to meet the small allowable character count.
We also focus on higher-level vocabulary and conveying information as though the reader has never before heard of each Activity to reduce the possibility of confusion.