Write a letter to your younger brother advising him to not neglect for your virtual class​

I have written an essay in english, and translated into spanish. Make sure you read the whole answer.

Spanish translation:

(dirección del remitente)
(fecha)
querido (nombre del hermano),
Hola como estas mi hermanito Espero que estés bien. Leí su carta y me decepcionó saber que no está asistiendo a su clase en línea correctamente. Y lo estás descuidando. Y quiero decirte que no debes descuidarlo. Sé que es difícil concentrarse en la clase en línea porque es nuevo y puede ser difícil. Pero necesitas atenderlo y concentrarte. Alteast deberías intentarlo. Es muy importante. Si estudias fracasarás. Asiste adecuadamente a tu clase en línea para obtener buenas calificaciones. Esta es la única forma en que puede cubrir el programa de estudios. Estudiar es importante para ser algo en el futuro.

Tu afectivamente (tu nombre)

English translation:
(senders adress)
(date)
dear (name of the brother),
Hello, How are you my little brother? Hope you are doing well. I read your letter and I feel disappointed to hear that you are not attending your online class properly. And you are neglecting it. And I ant to tell you that you should not neglect. I know its hard to concentrate in online class because its new and it might be hard. But you need to attend it and concentrate. Alteast you should try. Its very important. If you will study you will fail. Attend you online class properly to get good marks. This is the only way you can cover the syllabus. Studying is important to be something in the future.

Your affectively (your name)

Tip: if your writing in your notebook and sending photo to your teacher, and the lines are less, so you can write in big handwriting too.