Here are several tools I use all the time:

Hand clippers bought at any garden center.

Hand or Electric hedge trimmers for a large project also bought at any garden center. It looks like you have only little projects so you will not need these yet.

Small pointed sharp scissors for little places. I use sewing scissors I bought at a flea market.

Medium and Large pointed sharp scissors with a comfortable hand grip. I bought mine at Office Depo.

Different size crochet needles for pulling little stems into position. You could raid you mom's sewing basket or buy these at Walmart.