The pocket has accordion-pleated sides - the folds are indicated by the coloured-areas on the template:
Easy-peasy. You can add the reinforcements to the right or flip sides - your call.
Here are your free patterns:
Hope this works. Sil studio seemed to want to save in Studio 3- probably for the best as you may not have upgraded to Studio 4 yet.
Anyhow - hope this clears the way for more makes in future! Enjoy. A tisket, a tasket - a folded gingham basket (paper variety).