Any advice or pointers with be great!

They're very nice! I'd say bring the side walls in on a couple of the nails, just so they don't 'fan' out at the ends. Smile lines are great! xx

These are good if you are just qualified.
I take it the smile lines are good because you have used white tips?

You need to size your tips a bit better as they seem too wide on some nails so just ensure you make sure they fit perfectly from sidewall to sidewall in future. This may cause you problems on a maintenance appointment as there may be sidewall lifting because the very edge of the tip has not adhered to the nail, therefore the product won't either.
Trust me after a few maintenance appts with this to fix you won't do it any more lol

There is quite a gap at the cuticle area especially on the pinky. This is normal when first qualified but as you grow in confidence you should be able to get closer to the cuticle with your application.

To answer your question they are of a good standard for a new tech, and you can charge for your services. The fact that you are posting on the critique section in order to keep improving your skills is great.

If you post again, and I hope you do, then also take pics from the side view so we can see the apex, and down the barrel of the nail to show thickness and c curve.

Hope this has helped.