You don’t have Osmf …. The white line that you can see is linea Alba which is present in almost every human being ….. you need to get your teeth cleaned though …. Burning sensation because of the Areca nut which was there in your tobacco ….. have multivitamin capsule regime of 30 days have plenty of fluids and try to avoid spicy and hot food for a while

It would be difficult to diagnose based on pictures alone, it would be better to contact your dentist and get a consult in person to diagnose and treat the problem immediately before it worsense.

Hie.. by seeing just the picture can’t be diagnosed the stage.. else mouth opening seems fine.. so might be that initial stage.. For burning sensation and it’s treatment u need to undergo some medications or might required steroids injection..

Hie dear ..u mouth is totally fine ...white line is known as Linea Alba,, it is common in every human...don't worry