Uiowa University - English / Spanish / German sound production
This link carries you to an amazing pronunciation world focused on Spanish, English, and German sound production. Herein, you will visualize how sounds are uttered and articulated properly to sound as a native speaker.
Check this link frequently to reinforce the theory and practice the different sound production.
Best wishes
Click on Uiowa University - English / Spanish / German sound production to open the resource.