How's she look?

A bit dark, but fresh grow greenish, not so bad as i imagined ;)

watered according to size? This is most likely wrong. You water according to size of pot and what constitutes the substrate. You give enough to accomplish the task of fully wetting the pot and nothing less unless you have a super tiny plant in a huge pot, which would also be a bad idea. You don't choose the volume of water to give. You give enough to get the whole thing wet... and if it is soilless, enough for 10% to run out the bottom. Never let it sit in its piss. That runoff water is fine to use on a plant in the earth but not for potted plants. Plant looks lush. I'd go slow with fertilizer. Some soils have enough precharge for 6-8 weeks. You'll gain familiarity if you use the same products each grow. If first time using this soil, i'd wait for a hint of deficiency before ramping up fertilizer, and still ramp up slowly. Take notes of day count when you see it occur and can ramp up pre-emptively with confidence in ensuing grow cycles. Either way, track how you ramp up... concentration and timing. Adjust SOP as needed based on results. Trial and error is the way...

Looking real good ... Nitrogen uptake is excellent, watch for toxicity ... slight boost in Potassium might help things perk up.