Here are 3 tips that should help you perfect your Italian pronunciation of 'maglia':

• Break 'maglia' down into sounds: say it out loud and exaggerate the sounds until you can consistently produce them.
• Record yourself saying 'maglia' in full sentences, then watch yourself and listen. You'll be able to mark your mistakes quite easily.
• Look up tutorials on Youtube on how to pronounce 'maglia'.

To further improve Italian pronunciation, we suggest you do the following:

• Learn the five basic vowel sounds: Italian pronunciation is based on syllables where vowel sounds are predominant: A is pronounced like the “a” in ‘”Taco”. E has two sounds: e like e in “pen” or similar to ai in fair. O has two sounds: o like o in cozy or similar to o in cost. U is pronounced like the “oo” in “shampoo”. More explanation here.
• Learn 'gl' and 'ci' sounds: 'gl' pronunciation is close to english 'L': maglia (knitting), meglio (better), aglio (garlic).
  'ci' sounds like the 'ch' in church: dolci (desserts), cucina (kitchen)
• Double Consonants: Double consonants are indicators that you should pronounce the letter in a more prolonged manner or with more force: fatto / fato, cassa / casa
• Roll your R: Rolling 'r' sounds like the "r" in "rat" or "rocket", stronger and vibrating: tre, parco, radio.  More explanation here and here
• Subscribe to 1 or more Italian teaching channels on Youtube: it's free and it covers the core topics of the Italian language. Check out Manu and Lucrezia channels to name just a few.