I wanted to make a logo for 3 friends of mine, just for fun. They asked me if I could make a logo for them, because they simply want a team logo for a video game they all play competitively. Nothing fancy. It's not for sale nor is it to be printed out.
I found this logo of a football team, and I really liked the design. Is it OK for me to create my logo using another logo's elements and tweaking a few things. I'm new to graphic design and I wanted to make sure that it was ok for me to create a logo by copying a few things just for the purpose of making it for my friends.