The quilting looks ok, you may have to simplify just a lil ....
Please scroll through this tut ... it is easy and I will hold your hand !
https://goo.gl/photos/TuYqVjsiQck2HQH88and you will produce something, not necessarily a huge quilt, that is asking too much ...that you will be proud of!
Edit: On reading your last post more closely SMM, I now realise that the designs are done by embroidery machine and not quilted by (in my case in the tut) Walking foot.
In that case and as you obvs. do have access to an Embroidery machine, by the look of your cushions below, I would say there is no reason you couldn't achieve something along those lines and if you QAYG you could have the larger sized quilt too.