Bonermerge, easy body group tool.
Those two are pretty useful.
Except those aren't for building, they're for attaching TF2 items to TF2 characters and changing the skins and bodygroups of models that have them (which i guess can count for building if you want to change the skin of the HL2 barrels or crates)
review my pics i just posted
http://cloud-2.steampowered.com/ugc/901002374321171365/09A9999406EA338232DECF675A7A22C400559A67/1024x640.resizedimageI like the positioning of the sunken boat in the frame, not crazy over the guy in the foreground, the picture could have looked better if the DOF focus was on the boat so that the guy in the foreground was blurred, also, if your computer can support it, go into Gmod's video options and set water reflections to 'Reflect all', this will make water reflections more realistic and not just reflect the skybox
The other two pictures in the post the above picture comes from feel a bit plain, like, there's not a lot to look at and i'm not saying you need to have effects in every single picture, but a bit of bloom and some color correction may have looked better
http://cloud-2.steampowered.com/ugc/901002374331132188/C7A18F0C7E44A226E2741084A2BA961324130383/1024x640.resizedimage - The guy looks like he's going in the ground (which is fine if that was intended), not crazy over the angle, the gun isn't very important, you could have gotten more of a side view on the guy with the gun poking out from behind him or something
http://cloud.steampowered.com/ugc/901002374331125004/DDE9864407E479ED2A885CEF752ABFECE112D812/1024x640.resizedimage - A bit too much blank space and the poses look a bit unnatural, like, their pelvises are bent in a way that makes their pose look weird
http://cloud.steampowered.com/ugc/901002374331114110/9B2B4732A7B00D5E0554099248BDCF26214F605D/1024x640.resizedimage - This picture looks alright for the most part, but the bald guy's hand isn't exactly on the bench, you should have made him bend over a bit more
http://cloud-2.steampowered.com/ugc/901002374331065215/6E03CFA3D86F3BFDEB9D05C76CE625B44649247E/1024x640.resizedimage - Though the background is blurred out to show that it's not as important, it's still quite empty and unmodified, since it takes up more of the picture than the guy in the foreground, it would have been a good idea to add some stuff there
http://cloud-2.steampowered.com/ugc/901002374331061428/6AFC831C993A5D4DB4B985069EB9687E16400A79/1024x640.resizedimage - Looks good, i see what you were doing with the placement, but it just doesn't sit right with me, maybe if the guy was on the left of the picture instead of the right, but wasn't going off screen enough that his shoulder would be cut off, but again, that's just me
http://cloud.steampowered.com/ugc/901002374331056850/2473374F1B33A43DBABD68BB6890280B876F7955/1024x640.resizedimage - Again, i see what you were going for with the positioning, but it just wasn't necessary, it would have been better if you got more of a side view to show both of the soldiers by the sand bags
Maybe some tutorials on using the Rule of Thirds, could come in handy, or could just some useful information to keep in mind or to pass on
http://www.youtube.com/watch?v=QsRy5EVggyghttp://www.youtube.com/watch?v=YZN2bBxCXQUThose are in SFM, but the same rules can apply to Gmod since they both have ways of positioning the camera to your liking