Check out other successful contests and activities. Emulate don't duplicate.

Contact the hosts and ask questions. Most people are willing to give you tips on how to be successful.

When using gift points, whenever possible, set up a separate group for storage. By storing gift points in a separate group set up specifically for your contest or activity, it is much easier to keep track of them. It also let's other people see that you are using the gift points the way you intended.

Be logical. Place any graphics or welcome messages at the top. Next state the dates of the contest or activity, or if it's an ongoing item, list the deadline. Follow that with your guidelines/rules. Then you can list the judges and any specific judging criteria or list the prizes/awards (these two things can be reversed). Finally, list any contributors or acknowledgments along with a link to your group for donations.

Use WritingML. Using different colors and symbols can help you section off each part of your contest or activity. Don't forget to title each section, as well.

Use blank space. Leave plenty of blank space between the sections to help people distinguish between each.

Make a list or use a spreadsheet. Keeping track of specific entries or items can be tricky. Don't depend on your memory. Write down important information in a notebook, in notepad or in a spreadsheet.