Hello Francisco,
welcome here in the MEPD.
It is always a good decision to be a sandtrooper.
Show your parts here and you can certainly be helped:
http://forum.mepd.net/index.php?/forum/55-ambassadorarmorer-program/
However, it can be difficult with some FX parts. Have a look at the current CRLs, what can be used:
https://databank.501st.com/databank/Costuming:TD_sandtrooper
By the way, your pics are great!