This block looks just like the 'Card Trick Quilt block' here is a free pattern for that block.
https://www.generations-quilt-patter...ilt-block.html
Just keep going down the page and it tells you how to make it, with some images to help. Just sub your fabric to get the look you want. It also has a chart down the page for different size blocks, cutting measurement. Here is a picture of the block, as you can see, it is the same as the pattern you want, only with different fabric placements.
https://www.generations-quilt-patter...2-finished.jpg