Nic.,
I know you are a high school student and have limited tools. But you have the interest and obviously your hands work just fine. The knives you made are pretty good! But even with limited time, tools, budget and experience you can do far better work than you think. It comes down to patience and determination as well as having or developing an eye for details. If you check out Aaron Gough's excellent video on his filing jig you will see the kinds of results you can achieve with limited tools. Also search You Tube for Walter Sorrell's videos on making a knife. Then watch Nick Wheeler's vids on hand sanding. In the beginning many new makers rush the process out of inexperience and raw enthusiasm. In order to progress you will need to slow down and do your very best at every single stage of the process. When grinding the blade, make measurements, strive to get crisp and symmetrical grind lines. Make sure lines are smooth and graceful. When shaping the handle, make sure your finger scallops are evenly spaced with smooth precise scallops. Make sure pins that are supposed to be evenly spaced are exactly that. When sanding the blade and handle, make sure you work your way up through the grits and that every trace of the previous scratches have been erased by the grit you are using before moving on to the next higher grit. The list goes on and on but you get the idea. It doesn't have anything to do with budget or materials. It has to do with adopting a mindset from the very beginning that you are going to do precise and detail oriented work at every step. Most things that are done on machines by those that have the budget for those tools can be done by hand with patience and effort. If you don't have a lot of money or tools you make simpler knives, but you make them as perfectly as you can. When you get more experience and some more tools you can make fancier stuff. Just don't make excuses for not putting in the effort if you honestly know you could have done better. I'm not saying this is the case with you. I'm speaking in a general sense about an attitude that will serve you well when building knives in the future.