First attempt to Sci-Fi (No Inspiration picture, just winged it)

I like it, I would say that you should change the orange to a more contrasting color such as a nice blue but it is your choice, I generally build Medieval as I have gotten quite used to that with my time with FyreUK and several other build teams, so I don't really know how to talk about Modern as its not what I'm used to, but from what I can see I do like it! I would say also try and add some scenery such as modern trees maybe try some random blocks which aren't allways used so for tree's maybe some blossom tree's or some slime blocks and some other cool blocks to make it look more new and unique.
Hope this helps!