Please capitalize where necessary: if they disagree on style and form, however, it is fine for them to remain separate.
A: If they disagree on style and form, however, it is fine for them to remain separate.

Please capitalize where necessary: placing an icon in the system tray is perfect forthis type of circumstance.
A: Placing an icon in the system tray is perfect forthis type of circumstance.

Please capitalize where necessary: share your flame with as many people as possible! they love it! if it looks like rain just turn into a tree... then: more fire!!
A: Share your flame with as many people as possible! They love it! If it looks like rain just turn into a tree... Then: MORE FIRE!!

Please capitalize where necessary: if you work full-time you'll need at least a few months to prepare.
A:
If you work full-time you'll need at least a few months to prepare.