Although your palm is small, you can catch what you want, or what you want to catch is enough. How should I comment on this comment of others?

Although the hand is small, it is enough to catch what you want, or what you want to catch. It means:

Although a person's ability is small, he can just get it done. What they want to do;

A person's knowledge level is limited, but they just give full play to it;

Some people have big hands, but they want to do big things, but they achieve nothing. Two birds in the forest are worth less than one in the hand, even though the palms are smaller.