Yes. You can change the number and type of questions by editing your list fields and/or categories. To adjust your list fields, go to 'List,' and then 'Edit List Fields.' To set up your categories, go to 'List,' and then 'Categorize List.'
You can also add a logo to your signup form. To do this, go to 'List.' Next, click on 'List Settings' and then 'Logo.' Simply add your logo's URL to the text box, then click 'Save.'