When it comes to filing an amended tax return, there is a set procedure that you need to follow. There can be different types of changes that you may like to make in your tax return, such as the filing status, the allowable credits or deductions that you missed, credits or deductions that are not allowed but you have taken, certain sources of income that you have not reported. Following is a brief rundown on some of the basic steps that you have to follow in order to make such changes.