if it is for a side on game, having a slightly forward perspective arrow shots wouldn't make much sense.
something along the lines of this quick edit, doing it at a 45 degree angle would be a more practical approach if in game has some form of multi-directional arrow shooting mechanic

you'll need to get your pose right and position the bow and arms correctly, but that's what I'd suggest. crouching will be difficult though, see if you can animate a straight ahead arrow shot from the crouching position, if you can't then I'd advice against tackling it unless you think you can figure out how to make it work at that res.
Really really dig your style

the animations you have done so far look pretty effective. (although opening them up there are empty 0ms frames all over the place

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and if you are doing multi-directional shooting I'd recommend between 6 to 8 atleast 3 per facing direction, and the possibility of Up and Down. if you have flying enemies UP is a good idea, and 8 wouldn't be necessary unless you have the ability to shoot down through platforms ie.
