Questions & Answers about Senin resmin çok güzel.
Why is it spelled 'resmin' instead of 'resimin'?
The base word for picture is resim. In Turkish, some two-syllable words drop their second vowel when a suffix starting with a vowel is attached. Because the suffix for 'your' is -in, that second i drops out, giving us resmin.
Do I have to include the word 'Senin' in this sentence?
No, you can just say Resmin çok güzel. The suffix -in on the end of resmin already tells us it is 'your' picture. Adding Senin at the beginning is optional and is usually done to add emphasis.
Where is the word for 'is' in this sentence?
There is not a separate word for 'is' here. In Turkish, placing an adjective like güzel at the end of a sentence after a subject automatically implies 'is' for the third person (he, she, or it).
How do 'Senin' and 'resmin' work together?
Turkish uses a two-part matching system to show possession. The owner gets a suffix (sen becomes senin) and the owned object also gets a suffix (resim becomes resmin). They act like a matching pair to show exactly who owns what.