The following image gives information about (topic). This is a very beautiful image and I am going to speak for 40 seconds about it. In the image we can clearly see a highest and a lowest as well as a maximum, an average and a minimum. On the left I can see the colour (colours in the image) and on the right I see a (……….). At the top I can see (…………) while at the bottom I can see (……………). I can also see various numbers like (………..) as well as various words like (……..). I can also see (……………..) along with (…………………..).

If the image is a graph then you can also say the following:
On the horizontal axis I can see (……………..) while on the vertical axis it states the numbers/words (…………..)

To conclude, the given image is very informative.