Well there are several ways you can convey that. Some less polite than others. You might try: "And here I thought that he was bad at drawing, but this portrait is really good." It sounds natural, but a little condescending. You can also try the much fancier: "I was under the impression that he was bad at drawing, but it seems I was mistaken." This is a pretty big change in wording, but it means exactly the same thing and sounds much more like a compliment. Honestly there are many ways you can say this, but these are the two I would use.

When it comes to video games "bonus feature" is basically "extra content", though oftentimes limited in scale. Honestly, sometimes this description is simply thrown in there for marketing purposes, so don't take it too literally.

Wow, still no one explained the grammar to you yet? Ok, well I did some digging, and I found what you are talking about. English is a language that, just like many others, has changed a lot over time. In English, we often structure sentences more similarly to your second example, however both are correct, and here's why. We have an interesting side effect of this language changing over time, it's called subject-verb inversion. It doesn't always apply, but you can under certain circumstances invert the positions of the subject and verb. If you do it this way, it is valid, but to most native speakers it sounds a little archaic. I'll link you a wikipedia page on the subject. https://en.m.wikipedia.org/wiki/Subject–verb_inversion_in_English Edit: I forgot to mention that it has it's own set of rules, they're not too hard to learn, but you probably won't need to use subject-verb inversion in daily conversation. Just knowing that they both have the same meaning is enough for daily life.

Right so, in this instance "upon which" means "On top of the previous noun", and it's setting up a second noun to come. Then we have "is arranged", which says that the noun later in the sentence is deliberately placed, usually in an appealing way. Lastly we have "a selection of cheeses." This is the noun that "upon which" is talking about. I didn't submit this as an answer, because I can't explain to you why it's structured that way. It's perfectly acceptable English, but it feels distinctly "High society" to structure it that way. A more common version of this sentence would be: "A cheese board is a board that usually has a selection of cheeses on top of it."

"Essentially at the behest of..." in this context would mean, more or less: "Because they essentially asked us to." 'They' being the silk merchants. "Essentially" in both of those statements implies that the merchants didn't actually ask them to do anything, but it was understood implicitly.

I can't explain for you exactly why this is, as I'm still remembering how grammar works exactly, so I'm leaving a comment instead. "She has no money." - This one is correct. "She has not got any money." - This actually is technically correct, but you'll rarely, if ever, hear it. When making this statement, you're going to want to contract the "Has not", like this: "She hasn't got any money." Again, it's not wrong, but the contraction looks and sounds more natural. As for "She has not money." - You're right, this is invalid as it is, though with a slight change, it'll be the same as the example I gave you above. It'll vary a little, because English is riddled with exceptions that I can't even try to fathom right now, but you can use the contraction of "have not (Haven't)" instead of the two words. You can also use the following example to use "have" without either "got" or "don't": "She doesn't have any money." When applying this to the self, however, it doesn't work. "I doesn't have any money." would be invalid. ....English is tricky like that.

That doesn't sound very natural I'm afraid, but I understand your meaning clearly. Maybe try: "I appreciate your effort." or "I'm sorry for your trouble, but I really appreciate it."