Can we make a form on which we can paste a photo by webcam directly?

You can add the Take Photo widget to your form. Here's a link and demo form: https://widgets.jotform.com/app/take_photo

You can also use the Image Upload Preview. Here's the link: https://widgets.jotform.com/app/image_upload_preview

I hope this helps. If you have questions, please let us know.