"making changes on" is correct and usable in written English.
You can use it when referring to edits or amendments made to something, for example "He is making changes on the report before submitting it."
The team needs a change to move forward positively and, as Rehhagel seems defiantly against making changes on the pitch, the next step is an obvious one.
The time limits for making changes on nonrefundable tickets without penalty vary, and were posted yesterday on airlines' Web sites.
But Harris and Blitzer seem intent on making changes on the business side, while letting Lamoriello be Lamoriello.
If you're feeling depressed or anxious, but still coping relatively well, try making changes on your own (rather than spending money on a pro).
It seems odd that he is sitting at home in Florida as Steinbrenner asks his top executives about making changes on his slumping team.
Numerous marketers, including General Motors and PepsiCo, have also been making changes on their assignments to create campaigns aimed at black, Hispanic, Asian-American and other multicultural consumers.
Do the tools enable rapid deployment of customer-specific requirements and the flexibility to make changes on-the-fly?
Theatre is 'A platform for making change, on a political and a personal level.
This is just the latest example of students making change on today's most pressing social justice issue".
Faced with so many urban headaches, though, civic activists like Colonel Singh are pushing the government for change, or simply making change on their own.
Along with Director Carlton Carrington, Martin thinks he's actually making change on the volatile streets of Baltimore.
