There are many things which you need to keep in mind when operating for an ESTA. because any mistake can reduce your chances of getting approval and you will definitely get into a lot of trouble.
Things you need to avoid when operating for an ESTA:
One of the basic things that need to be kept in mind is always keeping a check on your passport as it is important for you to cross-check both before applying for an ESTA and before traveling with an ESTA. Because it happens sometimes that your passport details get changed after you get an approval for obtaining ESTA. As it is very true that your entry to the USA may be denied even if you have a valid ESTA with you this can happen if the US customs department spots a discrepancy in your ESTA information due to your passport so it is always better to keep a check on your passport before traveling with an ESTA.
You should always be concerned about your passport as it should be digital or machine-readable. Always try to make it a point to check your passport expiry date while traveling to the USA with ESTA. you are allowed to stay in the USA for a period of 90 days but if your passport expires before those 90 days you cannot stay there after that date.
Many people go to the United States with the purpose of studying as there are many top educational institutions and universities and they take the admission of thousands of students. If you are planning to go to the united states with ESTA for study purposes it would be wrong and serious actions can be taken against you in this and you can be deported. Under the ESTA only short term courses can be covered as you can take the cooking classes under ESTA. if you want to stay for more than 90 days you will definitely need to apply for a visa for that.
If you are looking for an ESTA for traveling to a different country through the US. The applicants of visa waiver program nations need to apply for an ESTA even if they use US airports for visiting different countries.
If you want to apply for an ESTA with not having much time in hand, your ESTA application will get approval as it does not take much time in it. You must keep in mind that you should avoid applying for an ESTA in the eleventh-hour as you should always be on the safer side. As I think about your application gets rejected by any of the reasons and you have some amount of time for applying for the US visa. This is the reason that you should apply for an ESTA at least two months before traveling to the US destination. As you will have enough time with you to apply for the US visa if your ESTA gets rejected.
It is very important to keep the documents ready and your confidence level high as after obtaining your ESTA there is a final round and you definitely need to prepare for that as a little mistake made at that time can lead to serious issues. Lack of confidence and inability to give proper answers to the questions with clarity can lead to denial of your entry. It is very important for you to answer all the questions without any hesitation and try to keep all the documents with you to show as evidence to all your answers. Always be true and honest in giving answers as it will help you a lot in clearing the last round.