I have been into this girl for a while and she has been giving me ioi's every time we see each other at uni. We went on an excursion and made a deeper connection physically on a bus late at night back home (cuddling, holding hands etc.). A week later we revealed to each other that we had 'feelings' for each other so I organised a date to the city to grab some icecream and do whatever. She canceled telling me that her dad wanted to have dinner with her which I assume doesn't happen often. So I acted all cool and said that's fine we can reschedule. She said that she really wants to reschedule she just doesn't know when. I also heard from one of our friends that she was super excited about the date.

Im currently frozen because I have been waiting for her to get back to me about a date. The reason I haven't asked her is because I don't want to seem desperate. So, we haven't spoken since and I don't know if its because she forgot about me or if she is waiting for me to contact her.

Obviously I should contact her by now but I don't know what to say... I want to have a conversation that will pose me as slightly higher value because right now I feel under her value. I want to reinforce that im supposedly an awesome guy to be with. Any help with my situation would be appreciated.
(I have plenty of knowledge about the art of seduction, just very small experience.)

Thanks.

or if she is waiting for me to contact her.

Only one way to find out.
Just give her a call, want to go out tomorrow or something similar. Put on specific time or date not just a hey want to go out?
If she backs off, move on.
Normally this should go fine

cool, so find out when she is free and do it up, litterally ask her when she is free, that way when she flakes, you know it's a flake since she had no other plans and something is more important to her then you
you are desperate to get this specific girl though, clearly, or you would be indifferent and would have already gotten to the bottom of this and either have a date set up, or be meeting new girls, you are just sitting back hoping she leads because you don't want to move on if she is not down... bad idea, have to give girls some direction, have to be more clear in what you want, waiting around for some girl with a ''I hope something happens'' mindset and plan of action is a great way to waste a bunch of time and get nothing accomplished
forget about higher value, she either thinks your awesome, or she doesn't, and if what you say in the above is true, then this is all low self esteem going on with you, you think you're lower value, why dude?, you're good enough, she either wants to meet you up or she doesn't, time is one thing in this life that is irreplaceable, don't waste your time, and don't waste your life, get to the bottom of things, be more clear about what you want, and if you are not met with the same, find someone who will meet you with the same, if she won't meet you it doesn't even mean she doesn't like you, it's even more likely that she is just unavailable to you sexually/emotionally at the current time, so don't leave this shit up to her, take some responsibility

avoiding a girl and worrying up a storm and focusing on her is not going to make her like you any more or less, the impression you make and the connection you form will do that, and if you do a good job in person and they like you and are available, they will want to see you, simple as that, and if they don't want to see you, ohhh well, meet new girls, re-prioritize them, give them a few more chances, but ultimately how much time are you willing to waste chasing a girl around? you will never get that time back, don't waste it, just move on when things are looking shitty and let the girl work it out so you don't have to, and while she's doing what ever, you go meet girls who aren't into wasting your time, and if she likes you, she'll come back around

just stop worrying about it, and do it up, and if it's not working out how you want, don't be a chump sitting there getting nothing done, get out there and make something new happen, you'll appreciate yourself more for going after the shit that is important to you

GOOD LUCK

Thanks pumpington, that's exactly what I needed to hear.