Luckily enough the first one went wrong pretty early into the process and wasn't too hard to scrap, the second one was a bit further in but I didn't want to scrap the idea entirely; once I was committed I had to complete it one way or another and the ones that went wrong taught me what not to do...
It was definitely a learning curve and had its moments, this piece was my third attempt as the first two ended up too saturated and the colours muddied up so in that sense it was pretty difficult in parts; I got the knack of it in the end and learned a lot in the process though.