Please capitalize where necessary: if you have an amazing voice but not look so good, it's harder to be successful in eg vocals industry than if one looks good but does not have an equally special voice.
A: If you have an amazing voice but not look so good, it's harder to be successful in eg vocals industry than if one looks good but does not have an equally special voice.

Please capitalize where necessary: my course is a must for holders of mortgage loans or who are considering his haul. be smart and learn to use what it offers new technology.
A: My course is a must for holders of mortgage loans or who are considering his haul. Be smart and learn to use what it offers new technology.

Please capitalize where necessary: non-compliance may lead to criminal prosecution.
A: Non-compliance may lead to criminal prosecution.

Please capitalize where necessary: to adjust the sound easily
A:
To adjust the sound easily