Your applique block looks great! I know how tedious it is to cut fusible web for the stems. If you ever decide to do more applique you might want to get basting glue.
There is a product called Glue-Baste made by Roxanne Products Co. You can find it in well stocked LQS's and on the web. It is a small 2oz. bottle with a needle thin top for applying very small dots of glue. :D