I feel you. When Lithuania (to my huge surprise) actually won the Open TISC, I had the chance to relinquish my right to host (as Sweden and Germany have done before me). Knowing that I have zero capabilities in web design or design in general, I knew I was not fit for the task, but @OlympicIRL said that everything would be okay and that I would be guided through the design process.
That was the sole reason why I decided to do something that I would have never done and it was the single opportunity that I had to host, because I didn't think that Lithuania could win ever again. I never planned to bid for hosting rights, because I thought that it would be ridiculous for me to do so, if I do not have those skills, I would be mocking the talented people that could have done more than me. Although, having won the competition, I felt it as a right of passage and I could not give up the opportunity.
The struggle was real. I was not in a good place, when the competition was approaching. My studies were destroying everything around me and left me with little time to take care of myself, let alone sleep. At the same time I was balancing a career that was really sucking the energy out of me that I had left. Still, I managed to pull myself together for the show. I even had a huge fight with my management where I had to postpone the TISC for a week, because the band's manager decided to approve a concert on the day, which I marked as 'unavailable' two months ago, then proceeding to harrass me over the phone and me not being a capable liar, she started making fun of my 'little Internet contest' and not really in the mood to argue more, I asked the opinion of the forum members and they didn't mind me postponing with something like 2-3 days left until the contest had to be held.
The day of the contest was somewhat close to Hell. Although, I already knew what to expect as I took up on hosting the draw game created by OlympicIRL to get the feeling of the process better before the big day. Add to that some connection problems as well as the fact that all of the flags in the templates just kept crashing throughout the entire day, I was just really looking forward to all of the breaks for recollecting myself and I don't believe that I actually ate that entire day Not to mention the fact that I was hosting in the dark times, where the host was expected to update the scoretable after every single voting post (add to that more than 50% of the nations did not vote themselves, so you had to post 6 templates in a 12 minute frame). So, having all that on my plate, I knew that preparing the scoring templates would have been a crazy amount of labour and did all of the counting and score adding live. To my dismay, I made one specific error that night, I gave 1 additional point to Algeria that they were not supposed to have and of course got a huge amount of shit for stealing points from the country when I actually fixed the error.
Anyways, even after all that, I was glad that I did it. And I remember @OlympicIRL's congratulatory private message and if my memory doesn't give up me, we had a nice chat about everything after the contest