Your work is great, Craig. Really, I like it a lot.
Some things I noticed...
I could very well be wrong here but just something my eye saw: On the watercolour sketch of the barn, it seems as though if you darkened the barn just a bit more, the texture, I mean, and the wood as well, it would stand out much nicer. Also it seems as though some of your linework is a hair dark. For example the gypsy woman with the cloth garment, under her chin where the cloth seems to be overlapping and what not, it doesn't seem to be as loose as it would be in real life because of the value of the actual linework compared to the value of the actual rendering around the line work. "Lines don't quite exist in reality." However you want to interpret that. However, you seem to have solved the problem in the portrait of the oriental girl in the hoody.
Put your hands in the air like you got the heat to your back
and shake your body like a baby born addicted to crack
And since lifes a gamble like the crabstables at Vegas
I freestyle my destiny, it's not written in pages