I used to sew a lot as a teenager and in my twenties. I'm just starting to sew again. I'm trying to work out what trimmings to use.
I like the fact that you sew; have you tried Tissura? They sell some of the finest trimmings- lace trims, feather trims which i like and also embroidered trims. 
I haven't tried Tissura. Never heard them. I will definately take a look after this. That's incredibly helpful. Do you have any tips on working with a stretch material? 
Off course! Most people think that to sew with stretchy materials you need to serger; although this can make it quicker to swe with stretchy knits it is costly. A zigzag stitch is a good alternative.