Well, a start would be showing us your UV map as it atm for each weapon before we move onto textures. I feel you could probably get a lot more use out of your UV map comapred to how you have it now. For these kind of weapons don't worry about mirroring your UV's, but do it in an none obvious way. For example, you will…
Meshes look OK to me especially since they'll be seen in first-person. If anything I'd say put more polys in them, for example the string binding the axe head is pretty obviously a square silhouette, should be more organic. The textures are the weakest part of these. The handles look very strange made of wicker, especially…