oh wow that's pretty bad...
Though you are new and don't know the techniques so it's ok.
Alright, some advice.
Shredder: First of all rows of weapons are useless on spinners like that, you want all your weapon weight at the extremities so remove the weapons and put some HEAVY weapons on the extremities of your spinner. Also use only DSL bars as spinner bars, much better and lighter than steel extenders + T-extender.
Second of all drive Eteks are generally not needed at HW level unless you want rammers, use a weaker motor. Wheels also seem too big.
Smesh: You need more drive (2wd NPC Fast is a good idea), more batteries (use the 30kg ones), frontal armor.
I also think your chassis is badly oriented, if I were you I would put the top of the T at the front of your bot instead of at the rear.
Also build to weight limit and don't use too much weight on chassis armor. Armor doesn't win battles.
