There is no minimum and maximum restrictions on images or content. Its your imagination and creativity how interestingly write the articles. However to earn more money try to cover topic with in depth analysis.
From the previous studies, about 2000-3000 words would create a good article with complete details, though it dependent on topic.
When opportunity is in front of you, don't hesitate to catch it. It will never come to you again. - Maverick
