All we know facebook only support 850×315 px size image so when you upload any photo above this size then facebook will tell you to crop ,
to fit that cover photo in your cover size.
Anyways we are talking about Facebook cover tool and we are listing few tool that help you in styling your cover.
Creating Cover using Friend Profile Picture
Friend Cover tools will create cover using all your friend photos and and upload that photo in your facebook album , you can then add that cover in your profile cover.
Burning Facebook Fire Cover
If you are looking to create cover using your own Name then Try Facebook Burning Fire Cover app to create your Name in fire.
Customize your Facebook Timeline Cover Photos
Create Stunning Facebook Cover Using Cover Creator
Covercanvas helps fb user in creating custom covers, one with Photos & Name ,Your Name, and Your Photos With many photo effects available you can create stunning cover with photos already available in Facebook album.
Customize your Facebook Cover using piZap
PiZap provides a very easy to use photo editor that lets you add photo effects, custom text or speech bubbles, hundreds of original colorful stickers, a full painting program, and much more.
Hope you like the stuff , if you any other tool , then dont forget to share.