I usually write music for every instrument in my songs, but I always have a hard time with the vocals. I just have a hard time finding interesting vocal phrasings. All of my melodies are just stupid runs up and down the major scale or somthing and it feels forced. I can sing relatively well but I just can't write vocal parts. Is it just something that comes with practice or is there anything specific I can work on to improve this? I've been trying for a long time
Maybe play a melody on one of your instruments and if you like it sing it.
I use a keyboard. It removes the issue of combining words and staying on pitch and just allows you to feel out what you'd like to do. Once you have a good idea there, its nothing but adding words.