...by the fabrics and colours used in the item photographed with a craft pattern you are working from?
This is a serious question as I think I'm subconsciously more influenced that I thought I was!
Working from your own pattern is an odd experience too, made all the weirder for me as I"m running low on the turquoise felted sweater I'd used for the original Peacock.
There are lots of other blues to choose from in my stash, and I actually do really like this darker version.
I have 3 Peacocks to make, and each one will be different, with not just the felted wool varying but the patterned fabrics too. So hopefully I can shake off the weirdness and begin enjoying the process a bit more!