If at all possible, you should plan on going to court to submit your forms in person. Upsolve will provide you with the standard bankruptcy forms required by the bankruptcy laws. Bringing them to the court yourself will tell you immediately that everything is in order. That's because the clerk will look through everything you're submitting right then and there and can let you know whether there are any local (court specific) forms you still need to complete.
If you're unable to go yourself, but don't want to deal with the uncertainty that comes with mailing everything to the court, you may be able to send someone else to submit the forms for you. Since each court makes their own rules when it comes to allowing third parties, i.e not the person that is filing bankruptcy, to submit the petition, call the bankruptcy court (specifically, the clerk’s office) to find out whether this is allowed in your district. They'll also be able to let you know what other information, such as a copy of your picture ID, the person will need in order to file your petition for you.
If you're unable to bring the forms to court because you're chronically ill or disabled, consider speaking to an attorney about your case. All filers have to attend their creditors' meeting in person and a local attorney will be able to let you know whether you may be able to get a waiver or other accommodation for this meeting.