Free Traffic Legal Advice

I have a few questions regarding Magistrate Courts in general as i have never been to one, and also a few things about what i should or shouldnt say to the court regarding my situation.
For a little more context i am a 20F who was 19 when i got caught by a police van, at the time i was actively completing my motorbike training aiming to acquire my A2 Licence.
I had just picked up my first bike on my CBT which i planned on riding for a few weeks while i continued my training in preparation for my test on the big bikes, one of the things my instructor kept picking up on was my control of my speed i kept either slowing down or speeding up over time while going down straight road or on hills etc. Basically i was inexperienced and still learning (this was my first time ever using the road as i didnt and still dont have a car licence).
On the day of the incident i was going on a 2-3hr to my university off motorways as i was on my CBT hense why it took so long and why i was aiming for my A2 licence, halfway there i was going down a fairly steep hill with a relatively clear road ahead, and due to my inexperience at the time i ended up getting flashed my a police van going 50mph in a 30mph.
Not long after this incident i got my A2 Licence purchased a larger bike and have done about 7000miles on the road commuting to university, visiting family and using it as my daily vehicle without any other incidents.
With all of this in mind i got a Fixed Penalty Notice that they revoked and Replaced with a Single Justice Procedure, i said i was guilty and requested to attend court.
Im aware that i was 1mph away having my licence outright revoked (new learners act + 6 points = no more licence) so i feel lucky to even have the chance to keep my licence. Currently im unsure if any of the above is worth mentioning/bringing up as a "defense" or as a way of showing them that i have since become a better, safer and more competent rider.
On another note when it comes to attending court the only outfit i have that i believe is appropriate would be a simple black straight dress with some black boots and a simple/smart black handbag. Nothing that stands out just smart/formal.
When it comes to talking to them how should i refer to the magistrate or should i expect them to talk me through everything?
Sorry for this long post thanks for reading, im hoping that explaining mostly everything to do with my situation someone will be able to clear up some of my concerns and give me a better idea of what i should and shouldnt say in the court, and if anyone has been in a similar situation what the court issued them with and what attending court was like.

Im honestly unsure what the first thing i was given was i remember fixed penalty was in the name, i have since moved house and the letter is still boxed up somewhere (i know thats irresponsible but ive at least kept my summons and statement of facts on me).
I just remember after saying im guilty they sent me a letter that this couldnt be handle under the previous method and forwarded it onto the single justice.
I should probably go digging for these letters again at some point soon.

The speeding offence was committed while i was on my provisional licence, a few weeks after that i got my A2 Licence.
I have never had a full licence for any vehicle type before this.

Just to clarify i was under the impression that if i get 6 points on my provisional them points will carry over onto my full meaning i would lose my licence as i would have 6 points. This is what i meant about having my licence instantly revoked as going over 50 in a 30 is 6 points opposed to 4-6 points.

From what you said in your post it sounds like i can get 6 points on my licence but still be allowed to keep my licence, on the condition i dont commit any more offences?

Thanks for taking the time to help me with this, my messages definetly have come across as scattered thoughts instead of anything comprehensible.

Just found the letter and it had nothing to do with a fixed penalty i have no idea where i got this idea from...

I first recieved a NIP, then they sent me a letter saying due to the high speed the case will be prepared for the Single Justice Procedure.

I’m not sure that I would tell a court that I was inexperienced and had trouble keeping a steady speed and as a result rode at 20mph in excess of the speed limit. That stretches credulity. It seems more likely that your inexperience led to you missing the relevant limit (unless you say that you knew the limit at the time).

Absent exceptional circumstances (e.g. rushing to see a loved one on their death bed, or some kind of medical emergency), applicable mitigation for a run of the mill motoring offence is quite rare. In other words, there is little that you will be able to say that will lighten the sentence.

However, there are any number of things that you can say that could constitute aggravating factors - in other words, make things worse.

Education tends to focus on the development of the student. As regards speeding, courts tend to be more like the cafeteria - that's today's menu, those are the prices, and tough luck, that's sold out.

The court will not sentence you more harshly for turning up in person and taking up their time by giving the same performance of how ashamed you are to be before them, etc., that they've heard 10 times already that day, but they aren't going to be offended if you send in a note expressing the same sentiments, nor will they give it any less weight than the zero weight they would have given if you expressed it in person.

If you feel that the experience of going to court will help you focus on the consequences of [getting caught] speeding, then it might be a worthwhile exercise. If you think that it is required or is likely to result in a substantially lesser punishment, then  would suggest waiting for a tame magistrate's opinions on the matter...