I have several diy tutorials available to purchase.
1. The art of blending and layering paint colors using a water bottle and pallet knife, $16 -https://www.etsy.com/listing/536260146/diy-tutorial-how-to-create-a-blended-and?ref=shop_home_active_5
2. How to use multiple paint colors for a weathered paint finish, $13 - https://www.etsy.com/listing/529549526/diy-tutorial-2-how-to-layer-multiple?ref=related-2
3. How to distress with a water bottle and blending colors, $10 - https://www.etsy.com/listing/526553682/diy-tutorial-painting-furniture-blending?ref=listing-shop-header-1