I really want to dread my hair, and it's long enough. It's about 7 inches long when straightened. The only problem is I have an undercut that goes up pretty high. I've been letting it grow back in recently but it's only an inch long. I would just go ahead and dread the top layer of my hair that's long, but I was planning on staggering my sections or making them random, and that doesn't really work with the way my undercut is shaved. It's shaved basically how a mohawk would be, except a little wider, so it's a perfect line on each side. So I couldn't, say, have two sections in the front row and then 3 sections in the next, because the hair all ends at the same point. I'd have to do a grid form, which I don't want. Is there any way I can grab random sections and still have it all work out even with the way it's cut right now, or should I wait until the undercut has grown back long before I dread? I really don't want to have to wait like a year to start my dreads but I'm worried it would just come out crappy if I did it now.