If you need help making the "sh" sound, watch this video. Remember to keep your tongue behind your teeth and let the air flow out of the front of your mouth, through your teeth.
Here is another video on how to say the "sh" sound!
To practice speech sounds at home, try to aside 15 minutes a few times a week. Spend the first 3-4 minutes going through a word practice list. Then try practicing the sounds in a more natural activity, such as reading aloud or playing a simple game. See the Articulation page for more practice activity ideas.
*** More Resources to Come***