'lo i reckon the second pic is fab, but i think u have 'middle page syndrome' try placing the main attraction in the photo to perhaps say a quarter of the way from any sides, the reason i feel the second works so well is that the angle of the actual photo is unual but also the angle of the building, it really does give a sense that i want to walk up to the building or around it, where as for example the first one has only have one direction that u could really go.
and yes i deffo agree wilth helium_junkie, that yeah get more arty, and deffo get some close ups, looks at some details as a focus perhaps, but it seems u like the land scape to, so maybe try the subject on one side with landscape to the side

i hope i am useful to you
(btw because i'm new here i never seen other photos so apologies if u do these things anyway, i just like analysing photos for my self anyway because i teach myself at th same time

)
oh and the other thing about the second that i reallly love, it looks like the building i really impacting on the sky because of all the blue space at the top, and then the clouds dispersing outwards, hope you didn't have to wait long for that to happen!