To organize a baby shower or gender reveal party, you can follow these steps:

1. Choose a Date and Time: Choose a date and time that works for the expectant mother and any important guests.

2. Decide on a Venue: Choose a location that is suitable for the number of guests you plan to invite. It can be a restaurant, a community hall, a park, or someone's home.

3. Create a Guest List: Make a list of all the guests you want to invite, including the mother-to-be's family and friends.

4. Choose a Theme: Decide on a theme for the party, such as a color scheme or a particular children's book or movie.

5. Send Invitations: Send out invitations at least two to four weeks before the event. You can use online platforms or printed invitations.

6. Plan Decorations: Choose decorations that match the theme of the party. Balloons, banners, and streamers are some of the popular decorations for baby showers and gender reveal parties.

7. Plan Food and Drinks: Choose foods and drinks that are appropriate for the event and the guests. Finger foods, desserts, and drinks such as punch and mocktails are common for baby showers and gender reveal parties.

8. Plan Games and Activities: Plan some fun games and activities for the guests, such as guessing the baby's gender, creating a baby name list, or decorating onesies.

Remember to consider the preferences and tastes of the expectant mother while planning the party, and ensure that everyone has a good time.