Hello Veeszhal. 

You need to upload your photo and signature in the portal otherwise your application will be rejected. Following are the specifications for uploading the photo and signature:

• The photo should be a recent passport sized photograph with white or light coloured background. The image should be scanned or a digital copy should be uploaded with a size between 4KB- 50KB in JPEG/JPG format.
• The signature should also be scanned or a digital copy must be uploaded with a size between 1KB- 30KB in JPEG/JPG format.

Remember that you should adhere to the specifications or your application might get rejected.

Hope this helps. For more queries please feel free to comment down below.