Looks good - nearly. 
I should have mentioned another fact about mini roundabouts. Whilst 7m minimum radius is a general guideline for decent visibility in the app, there’s another dimension that is more important. If the radius is less than 10m, Waze will avoid directing users to make a u-turn using the roundabout. This is important for a good user experience. Even the Highway Code advises against making u-turns at mini roundabouts.
In this case, you’ve just squeaked in under the 10m radius, so it should be OK. But whilst you shouldn’t go below 7m, there’s no need to make it larger than “reality”.