I love using online games during my lesssons. It takes some time to find a proper one, but it's worth it. Here is the game I use with my 2-nd formers to give them some practice in describing people's appearance. It is ideal for their level as the vocabulary used there is just what they need right now.
Pupils click on the words one by one, choose the style they want and describe it.
She has/has got green eyes.
or Her eyes are green.
You can also practise other grammar aspects:
These are eyes. They are green.
This is a nose. It is small.
You can ask your pupil questions and they give short answers.
Here is a worksheet you can use as a follow-up activity (hometask).