Thanks for your help.
1) I knit not too loose and not too tight actually. Definitely not too loose.
2) just ordered the yarn haven't gotten a swatch make yet to check the guage.
3) Knitpicks DK City (Tweed 55% Merino wool, 25% Superfine alpaca, 20% Donegal tweed
4) Medium bust (neither small or large)
According to other knitters the pattern knits up on the larger side as it is all garter stitch.