England cruised past the Czech Republic 5-0 at Wembley on Friday, jumping right to the top of the group.
Raheem Sterling led the way with a hat-trick for the Three Lions with a Harry Kane goal and a Thomas Kalas own goal sealing the win.
"It is the perfect start," Sancho said of the win.
"We came into the game well, stuck the plan and got the result tonight."
Sancho provided the assist on one of Sterling's goal as the attacking trio made of the two and Kane had their way all night.
Friday's assist was likely a sweet moment for the winger, who cited Sterling as an influence on his game.
"Yes, it is an amazing feeling," Sancho said of the assist.
"I hope I can get some more chances to prove to the crowd what I can do."
The start was Sancho's third England cap as the winger now appears set for a more regular role with his national side.
Next up for England is a match against Montenegro on Monday, and Sancho is eager to continue the improvements that began with Friday's win.
"We need to keep going," he said, "stick to the plan and try to get the three points any time we can."