Assuming you want tips on writing an acknowledgement for an English class assignment:
First, you'll want to express gratitude to your instructor(s). You might say something like, "I would like to express my gratitude to [name] for their guidance and support throughout this course."
Next, you should thank any classmates who helped you with the assignment. For example, "I would also like to thank [name] for their help in editing my paper."
Finally, you might want to thank anyone else who contributed to your success on the assignment, such as a family member or friend. For example, "I would like to thank my parents for their support in helping me complete this assignment."
Thanking those who have helped you is a courteous way to end your acknowledgement.