EdJen are my favorite EdOc pairing and the fact that this is for the 2003 anime actually made me like it more, since I totally ship EdWin in Manga/Brotherhood and can't understand any of the reasons why people dislike them as a couple. 2003 anime is just easier for me to accept that Ed and Winry are just friends and end up with some one other than each other.
I love that you dressed all of the ladies in shades of pink, since so many people have this irrational hate for pink and wouldn't ever use it on their ocs. I like that Ed and Jen are both dressed in more grownup type of clothes since huge issue for me with many of oc/canon next gen pictures is that the parents look too young and wear clothes that look very "immature" or that the parents wear such generic clothes that I find them to look so boring that I don't get why I should be exited about their marriage and adorable kids. Jen is wearing some type of jacket right? If so I would like to know what she wears under it and why the kids have more "summer" clothes with the short sleeves and so on since the jackets on both Ed and Jen look too warm compared to their childrens clothes.
I love Ellens dress and I like that both her and Tessa have those cute bows in their hair. Because I can't see what the front of Tessas dress looks like I'm currently imagining her in an old fashioned nightgown, even though it's probably similar to Ellens dress just longsleeved. I like that the boys don't wear t-shirts and shorts. The long pants and button up shirts make them seem like they are around 10 years old (one slightly over the other almost ten). Jessies hat is cute and I like that you gave the ponytail to him instead of Andrew like it was earlier. Andrews glasses are really cute and make him look so smart. I'm still getting used to Ellen not having her hair up in a bun since one of the earlier pictures with just her and Andrew as really small kids was so adorable and I liked how different Ellen looked as a little girl with her hair done up.
This is very cute picture and you are really good with this type of chibi style. Infact I think you have really great chibi style since most chibi tend to be too detailed and cutesy while your chibis are simpler and thus become cute by themselves rather than the almost forced cuteness of some of the chibi.