This is a good start. I can see you are using simple forms to build the finger and control your structure. Since hands come in all shapes and sizes it would be helpful to know what the goal is? I see a long fingernail; therefore, I thought you might be aiming for a witch or monster like creature. Then I thought, why not provide a number of examples. The largest example is the paint over if you intended this to be more realistic. Also provided is a boney and scarier finger example, a large sausage finger example and a female slender cartoon style finger. My recommendation is not to forget your overlapping forms and be careful with the proportions of the tip of your finger. It looked skinny where the joint is and fat at tip. Is this the feedback you were looking for? If so, I pray this helps you on your artistic journey and keep practicing!