Hello and welcome aboard, looks like a few adjustments and you should be right to go, having a build thread helps to get feedback. Once you have finished you can post in the pre approval section for further feedback prior to submitting it to your GML (garrison membership liaison) https://www.whitearmor.net/forum/forum/193-request-tk-pre-approval/
The only way I've been able to get rid of attachments is go to each post that you have attachments, click edit at the bottom of the post, then in the attachment box click on the recycle bin to delete
Always a pleasure to give back to the community by helping others, people give or take what they will but the majority stick around and share what they know
MEPD do have some great image guides in regards to the specific differences between character Sandtroopers, you can find links to the different version lower down this page http://www.mepd.net/?page_id=867
You can only add so many attachments to a post, many of us use free online image hosts like Imgur, once you set up an account you can upload your images and depending on what you are using either copy the "direct link" to the image or right click and select copy and paste directly into your thread. Here's some info which may help
I used strips of ABS and heated them and molded around the forearm and made them slightly larger so I could add some foam to protect the paint.
I'll have to dig out a photo when I'm back home.
Shame about the strengthening plates, you will find the brackets will crack the plastic just with general movement.
I like to use double snaps, nice to have a spare in case one fails, it's the difference between trooping and not trooping an event
If you find that it causes an excessive amount of cracking you could still keep the brackets without elastic and then add some inner snaps and elastic, would look accurate but keep it from cracking