Welcome to the forum! Let be one of the first to say hello and congratulate you on this endeavour. All of us know how hard creating a convincing and satisfying piece of music can be, let alone an original one! You are off to a great start, one of which not all adults can do. I enjoyed listening to your piece. This said, I do have initial comments and a deeper set of specific annotations I would like to share later. Here are my initial comments: The ensemble balance is too similar for too long. Violin 1 & 2 dominate the piece, and the other strings just act as support versus having a convincing conversation/ role in the piece. Use of whole notes is more than okay. If you like it, then keep them! This said, having a lack of pulse in the texture can make the music feel stagnant. Some of the other comments you have received may have been coming from this angle. To add, since the violins dominate the music over the course of 4 minutes, it makes the listener "zone out" as nothing major changed to their ear. Do not forget about slurs! As a string player, remind yourself that the use of a slur conveys bowing information. Even if you are not as aware as the other bowing styles, using slurs is a great way to showcase bowing information. The context of the music will inform them whether to up-bow or down-bow. Creating motion. To help the "stagnant" nature of the piece, one way to create motion is this: When the melody is slow, move the accompaniment. When the melody is moving, slow the accompaniment. Doing this will help drive the piece forward in a simple manner. Using rests for effect! While Barber's Adagio for strings is wonderful, remind yourself that even in such a thick and lush piece of music, he used silence for effect. Not all instruments need to play at the same time, nor do they always need to play in the same octave. You have the whole string section to move and pass ideas around. Strings can do double stops and divisi playing. It's another way to create an effect as using silence will elevate the moments you use all the sounds or all the instruments. Keep up the good work!