Not at all! No one is perfect! Anyone who claims to be has probably just found a creative way to hide their mistakes! LOL
If you want to feel more successful, be selective when picking a pattern. For example, if you have difficulty matching seams, start with a pattern that doesn't have a lot of matching seams, like Missouri Star's Double Slice Layer Cake quilt. Pick patterns with larger pieces, or squares/rectangles. Those would be easier than triangles. Build your confidence with the easier ones before tackling the harder ones.