How can I change message icons as shown here. . . .?

[TopShot]

Hi everyone!

I am totally new to this wonderful xenForo platform and its getting exciting every movement - My obsession is going up and up.

Now, I have a question.
I like to show these links as icons (see attached image)

Please let me know how I can do this? which style / template / I have to play with to change?

If any one could help me out I would greatly appreciate it.

 

[Vincent_imported]

The "Report", "Like/Unlike" and "Reply" butons can be played with in the post template.
You will find them by searching for {xen:phrase report}, {xen:phrase like} and {xen:phrase reply}

The "Post-it" and "Give Reputation" links are from add-ons, so you will have to look for those templates.
It should be pretty easy though. Search your templates for the content

{xen:phrase post-it}

and

{xen:phrase give_reputation}

 

[TopShot]

Big thanks - I highly appreciate your efforts.