Just keep going dude. I used to do this but add little by little every time me and the crew were just sitting around. You don't need to rush it, it usually comes together at some point
Im just gonna leave the sharpie as it is cause (I know its a different material) when I did this to a helmet I used clear coat and the sharpie just bled everywhere n it made it easier to scratch, if I do that on the board I'll post it n let you know what it does or if its a good idea @AmarierLizana