If you’re new to quilting and want to make a quilt block without using a pattern, a good one to start with is a nine patch. They’re very simple to make.
Here are some 9 patch quilt block instructions using just 2 fabrics. I chose 2 coordinating fabrics, one light and one darker.
Cut 5 squares of your lighter fabric and 4 squares of your darker fabric. (You can reverse this and cut 4 lighter squares and 5 dark ones, I just used more of my lighter fabric because I have more of it.)