Great to see you're getting involved with WF, it's an awesome tool!
I agree with @MinewireNetwork , the second design works well but wood (unless you've got a damn good reason for it) makes anything look very dated. I would just get rid of the wood and go for either banner images (landscapes are brill for this, flickr has loaaads of free to use landscape pics available, here's a link https://www.flickr.com/search/?text=landscape&license=7%2C9%2C10) or the colour gradients you've used on the other site.
I really like the other site, too, apart from I can't scroll either, I guess it might be that you've set overflow:hidden for your entire page? If you publicly share your site we can take a look, see this http://forum.webflow.com/t/how-to-enable-a-webflow-share-link/2573 if you're not sure how to do it. Also on this site, I think the sign up hover state is a bit much, it's quite distracting. How you did it on your landing apps page works nicer!
Oh and I love how the nav buttons rotate slightly/grow in size on hover, this is dead playful and fun! Will remember if I'm doing a site for an audience that needs a bit of excitement haha.
One last thing, if this is your first shot at WF then well done, looking great on the whole.