How to add custom kits and logo to specific team?

Hi, i have made my own kits and have a club badge, my question is how do i add them to replace the standard game choice of kit an logo??

i threw them into the graphics folder via the documents but im guessing i need to name them something specific?? or is it something i need to do with the in game editor? 

any info would be helpful thanks 

Hi, have you saved them PNG and are correct sizes  ?  

Then the kit needs to go in kits folder and the 3D kits in your 3D folder

 your club badge needs to be 2 sizes normal and small. 

The image bellow is the kits and badge i changed in my save.