Your barrel and breechplug tang inlet looks good. Your lock inlet looks good tight and neat. The triggerguard forward could be deeper but the rear looks good and that is a real tricky job on a pistol. As mentioned above the web between the bottom of the barrel and the ramrod groove throws everything off because of its thickness. At first sight I thought to suggest you rework the pistol by fixing the groove but I think you would uncover the ramrod hole forwrd of the trigger. I had the same problem with a fowler I once made from a pre-carve stock. The web was too thick and the whole gun was chubby. I deepened the rrod channel removed the extra forearm wood, uncovered about 3 inches of the rrod hole in the upper forearm, covered that with a wear plate and in general slimmed down the gun so I felt better about it. Salvaged the work, learned a great deal and made up a story about years of wear on a saddle, yada, yada, that made my interpretation fun. And all the time I was in the shop working on a gun - what could I have spent all that time on that would have been more fun.
Nice thing about learning this hobby, if one try does not go right, most of the parts can be used in another attempt. Unless you are committed to keeping it as is, I'd try to implement the above suggestions, knowing you will likely create new challenges, be patient, overcome the obstacles, have fun and show us what you end up with.
