Those blemishes will not harm the bow. They're only superficial discolorations, not physical damage.
Looks like a fine bow to me! But I must say that wouldn't call this a "longbow". A typical longbow does not have a shelf (shelves), no thickened, stiff handle, and more bending past midlimb. But no matter what name you give the bow, it still looks good
![Wink ;)](http://www.primitivearcher.com/smf/Smileys/default/wink.gif)
What woods are the tip overlays made of? Or: is it wood at all?