Help for New Character sheet for homemade RPG

Hello, I'm quite new at Roll20 but it has seduce me pretty quick. So I've convince most of my players to switch on this awesome platform. But I've a little trouble : we played a homebrew RPG that I Call "Arpenteur system" and we have no available character sheet for it. So, I've try to make one, but I'm not a programmer and I've reach pretty soon the end of ma capacity to undertsand how to do this. Is it a possibility that someone help me ? Character sheet is not very difficult and I can try to do the most part on HTML, just the CSS and especially the javascript I don't undertsand. I think I'm not bad in english, but I'm a Swiss French guy, so be aware I can have hard time to understand too technically terms. Thanks for reading this, I hope somone will answer it.

first of all, you need access to pro account to even use/test custom char sheets. Have you been looking at the guides? <a href="https://wiki.roll20.net/Building_Character_Sheets" rel="nofollow">https://wiki.roll20.net/Building_Character_Sheets</a> <a href="https://wiki.roll20.net/Building_Character_Sheets#Complete_Example" rel="nofollow">https://wiki.roll20.net/Building_Character_Sheets#Complete_Example</a> <a href="https://wiki.roll20.net/Designing_Character_Sheet_Layout" rel="nofollow">https://wiki.roll20.net/Designing_Character_Sheet_Layout</a>

Hello, Unfortunately, I've not a pro account. And thanks for the guides, I've missed them. I've barely somthing in HTML and working on adding a CSS on it, but if I need a pro account to upload it, not sure I will continue my task...