Need help with making a plugin

Hi all,
I need someone to help make me a wordpress plugin. I have tried to make it myself and have failed as I am not too sure how to make plugins. I am wanting to have a plugin that looks and acts like the four images I have on my homepage in the header https://www.sheppadviser.com.au. I am wanting the plugin to have a section to add the image, to add the link and to add the text but I want it to look as it does. The code I have in my header is:

<! -- Begin Pointers -->
<div class="pointer-image-set"><a href="https://www.sheppadviser.com.au/1-3m-to-better-prepare-for-disasters/"><img src="https://sheppadviser.com.au/wp-content/uploads/2014/07/Pointers-2506143.jpg" alt="" title="$1.3M to better prepare for disasters">$1.3M TO BETTER PREPARE FOR<p>DISASTERS &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp ?<img src="https://sheppadviser.com.au/wp-content/uploads/2014/01/pointer-arrow-pic.png">?read</p></div>
<div class="pointer-image-set-2"></a><a href="https://www.sheppadviser.com.au/nominations-roll-in-for-health-and-beauty-provider-restaurant-and-cafe/"><img src="https://sheppadviser.com.au/wp-content/uploads/2014/07/Pointers-25061432.jpg" alt="" title="Wellsprings nominated in Business Awards">WELLSPRINGS NOMINATED<p>IN BUSINESS AWARDS &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp ?<img src="https://sheppadviser.com.au/wp-content/uploads/2014/01/pointer-arrow-pic.png">?read</p></div>
<div class="pointer-image-set-3"></a><a href="https://www.sheppadviser.com.au/college-finishes-seventh-at-titles/"><img src="https://sheppadviser.com.au/wp-content/uploads/2014/07/Pointers-25061433.jpg" alt="" title="Notre Dame College netball success | Sport Adviser">NOTRE DAME COLLEGE NETBALL<p>SUCCESS | Sport Adviser &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp ?<img src="https://sheppadviser.com.au/wp-content/uploads/2014/01/pointer-arrow-pic.png">?read</p></div>
<div class="pointer-image-set-4"></a><a href="https://www.sheppadviser.com.au/this-weeks-edition/"><img src="https://sheppadviser.com.au/wp-content/uploads/2014/07/Pointers-25061434.jpg" alt="" title="Win $200 this week | see page 26 in this week's edition">WIN $200 THIS WEEK | SEE PAGE 26<p>IN THIS WEEK'S EDITION &nbsp  &nbsp &nbsp &nbsp &nbsp ?<img src="https://sheppadviser.com.au/wp-content/uploads/2014/01/pointer-arrow-pic.png">?read</p></a></div>
<! -- End Pointers -->

The code I have in my css file is:

.pointer-image-set {border-left:5px solid #2D2D2D;
float:left;
padding-left:4.5px;
padding-right:5px;
margin-top:20px;
margin-bottom:30px;
font-family:'Univers Condensed Bold';
font-size:15px;
font-color:#2D2D2D;
font-style:none;
text-transform:none;
width:271px !important;
}
.pointer-image-set-2 {border-left:5px solid #2D2D2D;
float:left;
padding-left:4.5px;
padding-right:6px;
margin-top:20px;
margin-bottom:30px;
font-family:'Univers Condensed Bold';
font-size:15px;
font-color:#2D2D2D;
font-style:none;
text-transform:none;
width:271px !important;
}
.pointer-image-set-3 {border-left:5px solid #2D2D2D;
float:left;
padding-left:4.5px;
padding-right:6px;
margin-top:20px;
margin-bottom:30px;
font-family:'Univers Condensed Bold';
font-size:15px;
font-color:#2D2D2D;
font-style:none;
text-transform:none;
width:271px !important;
}
.pointer-image-set-4 {border-left:5px solid #2D2D2D;
float:left;
padding-left:4.5px;
padding-right:5px;
margin-top:20px;
margin-bottom:30px;
font-family:'Univers Condensed Bold';
font-size:15px;
font-color:#2D2D2D;
font-style:none;
text-transform:none;
width:271px !important;
}

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Can anybody help with this. Somebody did tell me to link it to my featured images and posts but the problem is with that, is that sometimes these images do not link to posts and need specific images made forn them that are not otherwise posted on the site.

Please can somebody help with this. I just finished building this site for the business I work for, for free. I am happy to part with some cash to make it happen, but hope it won’t be too much as it comes from my own pocket and to be honest, it’s taken me 6 months to build and I really don’t want to spend any more money and time on this.
Hope you can help and look if you can’t help maybe you can suggest someone I can talk to about it.
Thank you.
David.