How to take tumblr photos with a iPhone that looks nice?

How do you take a tumblr photo that people will like and repost with an iPhone?

Also what kind of things should I take photos of?

Are you asking how to steal a photo from Tumblr and place it on your mobile (iPhone)?

You can't do that without infringing upon the owners copyright.

If you need such a "generic" photo, just use your own camera or smart phone to capture photo. Take photos until you get one you really like

It's all in the light.

It all starts with great light. For outdoor photos, this means taking shots an hour before/after sunrise or sunset when the light is at it's best. It generally means avoiding mid-day sun.

Then you need to find an interesting subject.

Then you need to frame and compose the scene well.

You can do this with any kind of camera.