I took a look at a random sample of about 1/2 of your images. Firstly I think you are off to a great start with a wonderful life-long hobby that may evolve into a successful career.
My recommendation for you is to get a tripod so you can increase your fstop up to f8 or f11 for your closeups. This will help your depth of field and sharpness. It will require a slower shutter speed so that's why I suggest the tripod - to avoid camera shake. You might also buy a secondary close-up filter to get even closer to the bugs. You can make some diffusers for your pop-up flash too. Have fun and don't forget the "rule of thirds" like all the "rules" of photography - sometimes must be broken.


