how to enable custom thumbnail on youtube by verify the channel and how to change thumbnail Hindi

hello friends channel par aane ke liye thanx friends is video mai mene dikhaya hai ki ham kis tarah se apne youtube channel par custom thumbnail ka option enable kar sakte hain jisse ham apni video par apni pasand ka thumbnail matlab photo laga sakein jisse hamari video aur bhi attractive lage pura process mene is video mai dikhaya hai ki kis tarah se channel ko verify karna hai custom thumbnail ko enable karne ke liye .apko agar koi bhi doubt hai koi question hai to aap video ke niche comment box mai puch sakte hain.....byee TECH AND MONEY HINDI -~-~~-~~~-~~-~- Please watch: "REGISTER JIO FREE MOBILE TODAY | जिओ का फ्री मोबाइल लेने के लिए देखें ये वीडियो" https://www.youtube.com/watch?v=odNAUviD_Cw -~-~~-~~~-~~-~-