Not a bad start. However, you shouldn't use age as an excuse for "bad" creations. Over time, you will discover new ways to connect parts, then you will find Bricklink; trust me, you will get there :-)
Now, one thing I have noticed with LEGO aircraft on this site is that, regardless of size, people have an urging to put mini-figures into their planes. Not all sizes of planes can do that; I feel that yours is more micro scale.
Also, of course, there is color coordination. For beginners, it isn't easy; but as time passes, you will see :-)
Finally, make sure everything is proportional i.e. the wings fit the size of your aircraft, etc. Makes a world of difference :-)