Here are some options depending on the context and your relationship with the person:
Formal:
* तपाईँ राम्रो देखिनुहुन्छ। (Tapai ramro dekhinu huncha.) - This translates to "You look good." It's a polite and general compliment suitable for someone you don't know well or are in a formal setting with.
Informal:
* तिमी राम्रो देखिन्छौ। (Timi ramro dekhinchhau.) - This means "You look good" and is suitable for someone you know well.
* तिमी ह्यान्डसम छौ। (Timi handsome chhau.) - This is a more direct translation of "You're handsome" and can be used with close friends or someone you're romantically interested in.
* तिमी धेरै राम्रो देखिन्छौ। (Timi dherai ramro dekhinchhau.) - This means "You look very good" and is a stronger compliment.
Remember: It's generally best to be subtle and focus on specific aspects you find attractive rather than using a direct translation of "You're handsome." For example:
* तपाईँको आँखा धेरै सुन्दर छन्। (Tapai ko aankha dherai sundar chhan.) - "Your eyes are very beautiful."
* तपाईँको मुस्कान धेरै मनपर्छ। (Tapai ko muskan dherai manparcha.) - "I really like your smile."
* तपाईँको शैली धेरै राम्रो छ। (Tapai ko shaili dherai ramro chha.) - "Your style is very good."
Ultimately, the best way to express your appreciation for someone's appearance is to be genuine and considerate.