Half built spawn, Need help on the rest!

Hey! Well on my server you can connect here -> (mc.dimensionalblocks.com)
I need help on building the new spawn! I have most of it done, but on the border I have open sides that I really need help building, i'm not good at structural. So, if you want to join, comment here (please have some builds on your account I can look at) and I can get you building as soon as possible! Thanks!