Leather Crossbody Bag
You can have this acrylic pattern from here:
http://www.leathercraftpattern.com/leather-acrylic-pattern-crossbody-bag-template-A-132
The finished size is about: 8.7" x 5.9" x 2.8" (22cm x 15cm x 7cm).
Hardware: 21cm No.5 zipper x1, No.5 slider x2, 18mm magnetic button button x1, 20mm bar needle buckle x1, 9mm x 4mm Chicago screw x2, 10mm x 8mm Chicago screw x1
Leather: We advice 2.0mm (5oz) leather for main body, size 34cm x 50cm, 1.0mm(2.5oz) leather for lining, size 20cm x 45cm, 2.0mm(5oz) leather for shoudler strap, size 50cm x 2cm, and 120cm x 2cm.
Tools: If you are a new leather player, try to considerate to have tool kit here: http://www.leathercraftpattern.com/leather-tools-leathercraft-tools/leather-tool-kit/leathercraft-tools-leather-craft-patterns-leather-art-leather-carving-tool