Glad you chose to share your first sketch with us. Very nice. Keep practicing and please keep posting so that we can all enjoy your upcoming creations. As you sketch, consider using a variety of pencils such as (light to dark) 2b, 4b, 6b, 8b etc. Combining these pencils will allow you to add darks and lights to your drawings. I think you will enjoy experimenting. Great sketch. Keep creating!