 maybe by running a chalk line and snapping a line down the fascia to make sure you maintain the proper angle of these pieces as they get assembled. And then where they join together, you're going to have to use a sealant on all of those seams to make sure they don't leak. So you definitely can do it yourself. It will save you some money. It may not look as perfect as it would if a gutter company did it, but if they're charging you crazy prices, then maybe it's just not worth using a pro and you should go DIY.