Well Andre I will agree with the problems with the Sony HX100V, 16 something MP, came out in 2011, whereas the Sony A33 was 14 something MP and came out in 2010.
As for the "I do believe a better camera can make you a better Photographer" I can not agree with that, to me what you are saying is better tools will make you better. To me more practice will make you more skilled, at what you are intending to do. If I believe as you do, then going out and buying better pots and pans is really going to take my cooking skills to the next level and beyond. I think not, having better equipment is one thing, using the skills that you learned thru mistakes, and applying those skills to the equipment that you now more control over is what makes lead you to be a better photographer.
As for the picture of your daughter, you want to print it 16x24 on canvas, do it, if you yourself do not print you have little to no idea as to how it will look. If you want bright, rich colours, fine detail than print on a gloss or luster, if you want canvas than it will not be as bright, or have as rich colours and fine details will be soft. As for the noise you will not see it, as the printer is not able to print the difference between 0 and 35 on canvas you might see the tone difference between 35 and 36, however everything below 35 will be one tone (black). So have it printed remember, when printed you are seeing reflected light, on the screen you are seeing projected light. Another thing depending on when you took the image, why not reprocess it, the software programs are much better with noise reduction than 2 to 3 years ago, then have it printed.
Cheers: Allan