Good job for a first try. n_n However, it looks a little awkward with "PsyPearl" in the address and "The Twilight Valley" on the header. I personally think PsyPearl sounds cooler, but it's up to you... if you left it as PsyPearl, you could use a Spoink as a mascot maybe. :D
Lessee, content... I'd advise adding a guestbook if you can. You really don't need game reviews, especially sugar-coated "10/10!" "9/10!" ones... we've all played the games before. Also, as a tip, don't use SubCategories... you have to click on "the games~" to get to the D/P page, and then click the D/P page to get to the RSE page. Instead of doing that, why not just put a link to each page on the menu for easier access?
And your sprites... I'd put some sort of disclaimer up top, so people know not to steal them (or if they want to use them, they can) and perhaps categorize them into "Pokemorphs" "Mixes" "Edits" and the like, for easier navigation. :3
...You know it's still possible to make good avatars in Paint? Instead of just uing a full-color background and pasting a sprite on there, use a background with a border maybe and a pattern, or a background from Google. You can animate without a program, too: use
Iaza.com to do that and to add effects. It'd be neat if you had the Arceus avatar flashing through all the different formes. :D
...I like critting, don't mind me. xD Keep up the good work, I look forward to seeing progress you make on your site.