Hi, as per the rules and suggestions given by every board you need to start on the right side and fresh page for the next experiment. So, if you have written something on the left side of the page than you can not continue on the right side of the page for a fresh experiment. Take the next page which has both left side page and well as the right side of the page empty and you can start there. Also, if you have written something on left side make sure there is conclusion on the right side of the page as it indicates the end of the experiment. If you still have doubts feel free to comment. Hope this helps.