can i upload my own form

I'm not sure if I understand your query correctly? Do you want to import any other form to JotForm? If so, you may try our Import Form feature while creating a new form.

You may then choose the option From a webpage so that you can enter the URL of the Form to import.

Please be noted that only fields shall be imported if the importing form is not  a JotForm and you may need to edit the form as per your requirement.

Hope this information helps. Let us know if you need any further assistance. We will be happy to help.

Thanks!!