Please help identify characters in my seal on a modern brush painting
The seal read 李麟 /Lǐ lín/, It is a name of a person
李 means 'plum' (family name)
麟 as in 麒麟 (Kirin)
麒麟 is one of the four spirit beasts in Chinese myth (the others are 1.dragon  2.phoenix and 4.tortoise)

Note:
Google Translate translates 麒 as 'mythical unicorn'; 麟 as 'female unicorn' Which mean 麒麟 is the general term for 'mythical unicorn', but the image of 麒麟 in Chinese culture is quite different from the unicorn in the western myth which we call 獨角獸 (one-horned beast)