jobel no your game isn't ugly, and looks good to me! I'm about to go on holiday, but new processes for asking for game promotion are in the works - this will be in a blog post soon I think. Use the tags #madeinconstruct and #construct3 and it's easier for us to RT (I'll do you a RT if you do this soon)
mikehive RE showcase, I know it seems like an easy thing to add to the showcase, but it does take a couple of hours and a bunch of back and forth emails. It's a tricky position because I can tell you to send me in some images and a video to see if I can add it, but then I know I'm going to have to deal with a dozen more emails saying I saw you added this game because they asked, can't you quickly add mine as well? People get really passionate and dejected when we reject this sort of stuff.
The aim of the showcase is to prove Construct 3 is used in industry, is a useful tool to raise/make money, and to show successful games. I think it does a pretty good job of doing this for the time being. In all honesty, I don't think it needs any other content right now but this might of course change in the future.