Unless you're going for photorealism, which you're not seeing as you're using lines, there's really no need to draw every single feather. In fact all of that detailing can really take away from the overall drawing. Right now the feathers are drawing all the attention, both by their definition as well as the colours, the dragon is completely uninteresting to look at.
In terms of anatomy there's a lot of work to be done, and you may want to look up some pictures of bird wings to get a better idea of what they look like.
Drawing and painting is all about suggesting
. By drawing a couple of strong outlines and very lightly adding in some detail, you can very easily suggest feathers. The human eye and brain are quite smart, they can fill in a lot for themselves and this makes the art much more interesting. For that second wing I would suggest you don't draw in a single feather. Only draw the outlines and leave it at that, everyone will understand it's a feathered wing just like the one we're seeing.
Here are some redlines for you;
Oh and another thing, try not to use straight lines too much. They tend to make a drawing horribly stiff-looking.