Hi woonydanny,
Do you have a custom template on your website ? Sometimes the templates override the default hikashop css. You should maybe edit your templates properties.
For the Facebook like button, you can edit the id: #LikePluginPagelet to move it where you want.
To change the position of the product code, edit the class:
.hikashop_product_code_main{
display: block;
margin-top: 10px;
font-size: 1.4em;
}
The product code is displayed twice, so you can apply this property too:
.hika_product_code_show{display: none;}
For the image, can you give me a screenshot of your images configuration ?