I did this project for my husband's aluminum canister. I did some searching of different kinds of stitches and decided to use a raised/relief stitch, it is a kind of textured stitch which I believe is good if I want to not just to have a carrier but also protect my DH's aluminum from dent and scratch.

The stitches is adapted from 300 Crochet Stitches, hence used their definition and instructions on how to make the TR/RF stitches. I also posted the diagram from a chinese crochet stitches book to illustrate the instructions. Hope this will clear some of the confusion. Sometimes it helps to have a diagram together with instructions.

Yarn: Scheepjeswol Superwash Zermat or you can use any worsted weight yarn
Hook: 5mm
Tapestry Needle for weaving

depends on how tall is your aluminum

did use any gauge

Definition: Raised relief - inserting the hook around the whole stem of a stitch
TR/RF2tog - treble/raised (relief)
TR/RF - treble/raised (relief)

Base:
make an adjustable ring or ch 5 and sl st on the first ch. to form a ring.
rnd 1: make 8 sc