A great tribute - all the artists are easy to recognice and more than deserving of being honoured!
You are a great artist yourself, and the Guild is better for having you in its ranks.

As for your question about commissions and dealing with the pressure. I do appreciate I'm not as much of a pro as some of the true pros, but I do still do commissions from time to time... For me, personally, I just rely more heavily on the client's judgement than my own. I'm never satisfied with my own work anyway, but if the client is happy, that means it's enough. If they didn't like your work, they would have gone to someone else. You can only do the best you can.