I remember the frustration I felt when I was first learning Procreate. I wanted to capture the watercolor and coloured pencils look that I had with traditional medium and had no idea how to do it. I searched Youtube for Procreate watercolor tutorials and followed along. After doing dozens of these tutorials I started to notice themes with techniques and brushes. If you haven't already done this, you may find it helps.
Nowadays, I do all my drawing (and some color blocking) in Procreate and then take it into Rebelle for the watercoloring. It's an amazing program (with another big learning curve) if you ever want to check it out. I then finish it in Photoshop or Procreate for final details.