From adding an image to changing the style of your text, Squarespace even has videos that will make the process as easy as their platform itself.
https://support.squarespace.com/hc/en-us/articles/205814528-Image-Blocks
Once you pick the template you want to use, you can follow these simple steps in order to add a personal touch to your digital image.
If you want to be more creative and add that extra mile that MAKES YOU YOU, you can also check my previous post that will definitely help to enhance your presence.
Starting on how to customize a block:
https://elsysalazar.com/posts/how-to-customize-a-block-squarespace
How to customize a form:
https://elsysalazar.com/posts/how-to-customize-a-form-squarespace
How to add symbols to your web design:
https://elsysalazar.com/posts/add-symbols-to-your-web-design-squarespace
How to personalize the font of a text block:
https://elsysalazar.com/posts/personalize-the-font-of-a-text-block-using-code-squarespace
These are my ABC helpful suggestions for anyone that would like to design their own website.