Volunteer in Thailand, Vietnam and India

I'm a Swedish girl that currently lives in Australia. In the end of January im planing to travel Asia. It will be a mix between volunteer work and travel. Planning to start of in Bali in the end of January, then be in Thailand for about 6 weeks, half which if volunteer work. Then go through Laos over to Vietnam. Same there, half of the time will be spend travelling and half of it will be work. Then over to the northern parts of India, same there. Thats what i got so far but im flexible. It would be great if anyone wanned to join the trip, the hole or parts of it. Maybe even come to Australia first and i can show you around? Im def up for ideas and suggestions/alternations. :)