Congratulations on your first success. Just some advice and constructive criticism.
Paracord stretches alot. Buy a dacron string and it will speed things up alot for about $15.
for the next one:
If you make the handle fade into the limbs smoothly, it will be less likely to pop the handle off, and will transition into the bending portion of the limbs nicely. (use 1/2 round rasp for this).
the more narrow the tips, the faster the bow, generally speaking. Shoot for tips less than 1/2" wide, 3/8" or even 1/4" is entirely possible with care.
Search 'tillering gizmo'. make one and use it. The more evenly the limbs bend, (i.e. the better the tiller) the better the bow. It will last longer, shoot faster, smoother, better, safer etc. The tiller looks decent from the pics, but there's always room for improvement.
A clean, even tiller is really the key to a great bow. Its the only way to start pushing the limits on a bow design, making a shorter, more narrow, more reflexed, more recurved, heavier draw, faster bow. Tillering is the real trick in bowyering. The rest is art and imbelishment.
Again, congratulations onyour first, keep it up. You'll get better every time.