Hello assasin2004728 (may I just call you assasin?) It's great to see such eager adventurers as you.
My tips to you for improving your chances of getting Artist is that you try and partake in as many jobs as you can to show that you can work well with others. Because whilst being good at building in the style of the server is key for an Artist, being able to work with others is almost as important. In doing so you'll also be wirking your way towards getting Commoner which is a rank you get when enough higher ranking members have voted for you (which they'll do if you show your dedication to the server via jobs) and it shows that you are being trusted by the community which in turn increases your chances of getting Artist.
You should also try and show that you are able to build in several of the server's different styles. This you can do either by including screenshots of jobs you've done in different regions in your Application or by partaking in several Theme Builds and put screenshots of that in your Application as well. Or preferably you do both to increase your chances even further as the more you show of your capabilities in your Application the greater the chance of getting Artist.
Oh and when you updateyour Application make sure to reply to it's thread with something like "updated" or "added this and that" as that will notify the Designers and Head Designers who evaluates the applications that you have updated yours.

Please update your application or the Artist Committee will not consider your application until we see an update and improvement to what was previously said by one of our artists.

This application has been denied due to no update or improvement to what was previously said by one of our designers. Please contact me directly if you feel you want to pursue this again.