Presenting your assignment is as much important as writing quality answers. You can use "A4 sheets" or "Foolscap papers" to write IGNOU assignments. Take a look at the following steps to get an idea on assignments submission.
Sheet 1 :-
You should attach question paper to assignment.
Sheet 2 :-
Write your details and the assignment details. You can write in this sequence - Enrollment no., Name, Address, Course Code, Course Title, Assignment No., Study Centre, and finally Date of submission.
Sheet 3 & Onwards :-
You can write answers on both sides of the paper. Some students write just question number while writing the answers. You can follow like that. But, it's always a best practice to write the question along with its number in the question paper. So that there is no need for evaluator to turn the pages to check the question that corresponds to the question number. Less irritation to evaluator means more marks for you. 😉
Submitting the assignments :-
Finally tie the loose papers with treasury tag. I couldn't find free image of treasury tag online. To avoid copyright issues, I'm not uploading the image here. You can check this link to see how the treasury tag looks like.
Make separate bundle for each assignment. That means MSO-001 assignment bundle, MSO-002 assignment bundle etc.
It's better to take xerox of your assignments to keep the copies with you.
Final Step :-
You can submit assignments by post or in hand at your Study Center. Do not forget to receive Acknowledgement slip. In general, while submitting exam fee, they will ask you to show acknowledgement slip to make sure assignments are submitted. Even if you pay the exam fee online, it's always safe side to keep your acknowledgement slip with you till your course is over.
Good Luck with your assignments. 🙂