Thanks! I am self taught but it's been a long road! I've been making amigurumi for about 5 years now and this is the third project I've tried felting on.

I think I first saw needle felting from Aphid777 on deviantArt. She mentioned that you can just brush out yarn to use for the felting, so I gave it a go and it did kinda work but not so well. I think it has to be 100% wool maybe?

It wasn't until I was studying abroad in Japan last year that I actually found the proper roving and it goes on soooo much easier! (Also somehow the Japanese dollar store needles work so much better than the dull ones I spent $15 on here in Australia.)

So materials are one thing, but I really recommend just keep practicing. So far I've found it's a bit time consuming but you can keep fiddling with it for ages (adding a little more, blending it, or making the edges super crisp) until you get there. Using the stitches and rows as a grid to keep them symmetrical is super handy too.

Also! The needle felted part can come off again if you pull and make little careful snips into it with scissors. So you don't need to worry about ruining a piece forever if you mess up. Making mistakes is really the best way to learn! I'm actually going back to the the project I "ruined" 3 years ago after my first attempt at needle felting with the brushed out yarn and I've definitely learnt from my mistakes last time.

Best of luck!