Hello Akhilesh, 

There is no official announcement related to the IMPROVEMENT exam conducted by RBSE. Still vist the website of PBSE regularly. I will guide you about how you must fill your form,

Procedure to apply for RBSE improvement exam:-

• Visit the official website
• Search for "RBSE @ rajeduvoard. rajasthan. gov. in"
• Download the Pdf file.
• Enter all the details
• Pay the application fee online or offline
• Click on submit button
• Take the print out of it.

I hope you will find my answer helpful.

All the best.