can't find 'composed look' with new masterpage

Hello,

I've changed the fontstyle of my page within a .spfont file. But the problem is that the font off the webparts didn't change with it. 

So i copied all the content from an existing master page and paste it in a new master page. I also added a link to a css file that i have created to change the font of the web parts. 

Then i made a new 'composed look' with the master page that i have created. But the problem is when i click on 'change the look', i can't find find my new look. All the other 'composed looks' that i have created are visible..

What could be the problem? 

Thanks in advance!