Social media icons

Hello, I loved the Helena free theme so much that I bought the Helena pro. It's very nice! I have a problem with the social media icons. As you can see below my page at http://www.diydiva.nl/ they are fine, except for the first one. This icon is just placed a bit higher than the others. It's for Bloglovin, a blogfeedreader you don't support in the social media list. How can I place everything on the same height? I read the manual of Helena, I downloaded Catch webtools, but I still don't understand how I could use my own icon images in a menu, instead of your icons. Can you please help? Thank you, Martine.