First tip with SD: Get your clones out. Waiting to get them out in a combo isnt always easy, and activating after a nut punch is a huge risk. Sometimes you need to wait for the neutral game and just risk it from a distance, or duck a fireball and activate. You ABSOLUTELY NEED these mimics out as much as possible.
2nd Tip: Chip, D4, and Throw are your friend. I'm not kidding, sometimes it comes down to those 3 things. Sometimes in my locals I'll play matches there the F2 never lands once.
Tip C: A block string into a mimic shadow kick isnt a bad thing...technically you have "pressure" here, but characters will armor through the follow up if they know the match up, and lots of people know the matchup now. You need to by conscious of where the match you're in sits. Does you're opponent have no bars? Then use them for pressure. (watch out for characters with 6 frame moves) Does the character have a weak armor move like Dvorah or Ermac? If so you might want to consider trying pressure since they cant full combo punish you. It's a risk you need to think about depending on the match. Dont forget to fake it as well. IF they know the matchup and you land a nut punch, hit them with a standing 4, or 114 and then block. Let them waste meter and then punish their ass.
4th tip: 3,3,3~EX-MRS, jip, 333~EX-MRS, jip, B3,4,3 is an amazing chip string. Does about 20%, takes 2 bars but you build one back. Worth it if the opponent lets you. They might take a hit to get out, if they do that, mix it up.
5: DAMAGE. Other SD people might tell you different, and sometimes it depends on the MU, but i tell ya what, I go for damage. 46% mid screen with 2 mimics, 1 bar. In the corner 50-60% with one bar. Fucking hurt people if you can. Some MUs, you may not be let in very often ( BONESHAPER, DUMB.) Make it all count.
There more, but i'm tired.