Tried online bike fit service...thoughts?

So, after getting some niggling back pain recently, I decided I wanted to try and get a better fit on my bikes. I came across myvelofit online, found some positives reviews so thought I'd give it a go.

It's got me lower on my saddle than I think I ever have been (which might have been causing the pain in the first place), but the positon feels good on the trainer. How does my positon look? Please ignore the's def just because its Christmas 😉