When your paragraph has been created, add an image block on top of the paragraph block:
Choose an alignment (right or left) for the image by selecting the Change Alignment icon in the block editor toolbar:
The image below has the alignment to the left:
Next, select the desired image, using one of the options given (as shown above):
You can find more information regarding adding an image to text at: 3 Easy Ways to Place Images Next to Text in the Block Editor