When I first started quilting, I was told that the quilting should be the same density all over the quilt.
Your sashing is quilted more than the blocks. I would add some stippling to the background of the blocks, and maybe more quilting on the motifs as well.
As for feathers, there are several different techniques out there. Do some research on the internet. Trace by hand to teach muscle memory before trying to quilt them. Practice on plain muslin sandwich. Draw it out and try to follow the lines. I can't free motion quilt without lines to follow myself.
I think the quilt looks lovely, and you have done a good job quilting it.