Register as a auto-entrepreneur for knitting business?

I wonder if you would be able to help me, at present I would like to register as an auto-entrepreneur under several formats - one is the as far as I can see code 13.91 - the fabrication d’etoffes a mailles, i.e. manufacture of knitted and crocheted fabrics. Using a domestic knitting machine. I would then like to take on contract knitting (could be from the UK), knit to order (using local advertising) and knit and then sell. To do these, would I need to register under 47.91 - to sell via the internet and under 14.3 to sell thru stalls and markets of other goods. I am a UK pensioner and currently have a carte vitale. I do not anticipate earning a fortune, just enough to supplement my income.

Just as an aside, would I also be like to be able to offer paid tuition on domestic knitting machines or would that just totally complicate matters. Unfortunately my french is not too hot, and I will probably pay a visit to the CFE in the hopes I can get some assistance though I will certainly download and take a look at the forms on the web but the path I want to follow is quite complex and I want to be totally legal before I start up. Any advice you can offer would be much appreciated.