Townsend enjoyed a superb international debut last month when he scored a fine goal and set up another to help England to victory over Montenegro - and he followed that with another impressive performance against Poland as Hodgson's side sealed qualification.
But the 22-year-old knows he has much work to do if he is to feature in Brazil.
"It does sound good, being called an England international, but I have had two games and there have been a lot of players who have started their international careers well and have faded away," Townsend told FA TV.
"I can't let that happen to me, I have to keep playing well and try to force my way onto the plane next summer."
Townsend will face competition from Arsenal duo Alex Oxlade-Chamberlain and Theo Walcott for a wide spot, while Hodgson is a fan of Liverpool's Raheem Sterling and with only one more friendly in March before the provisional squad is named, he knows he must make the most of any opportunities in the next two games.
"We have a big, fantastic squad and every one of us is going to be trying to impress in training and the games to try and get to Brazil," he added.
"There aren't many opportunities from now until the summer to play for England and impress the manager so everyone will be giving 100 per cent and looking to catch the manager's eye."