Great Britain U20 Women lost their first two friendlies in France but won the third game on Saturday, 66-64.
"The win was, of course, enjoyable, but more importantly at this stage I am confident that the players appreciate the work and task ahead of us," coach Damian Jennings said.
"As a coaching staff, all we asked of the players is that we make progress, and we feel they have done this across the France test series."
Britain won promotion last summer and are looking to cement their standing in the top flight.
"The challenge of Division A is a significant one, but we have built a clarity about the style of basketball that will give us the best chance of competing," said Jennings, a graduate of the FIBA Europe Coaching Certificate Program.
"I have no doubt that all national teams will be improving their game over the next three weeks, and we plan to do exactly the same as we move to Cardiff where we host Holland in a two game series."
That two-game series will be played at the University of Glamorgan Sports Park on Friday and Saturday.
Britain are in Group D with Slovakia, Spain and Latvia.